{"product_id":"switzerland-10-franken-banknote-leonhard-euler-6th-series-psv-20","title":"Switzerland 10 Franken Banknote - Leonhard Euler 6th Series (PSV 20)","description":"\u003ch3 class=\"text-text-100 mt-3 -mb-1 text-[1.125rem] font-bold\"\u003eProduct Description:\u003c\/h3\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eMetalStacks proudly presents a distinguished piece of European currency with this \u003cstrong\u003eSwitzerland 10 Franken (Francs) Banknote\u003c\/strong\u003e from the \u003cstrong\u003eSixth Series (1976–2000)\u003c\/strong\u003e, featuring an iconic engraved portrait of \u003cstrong\u003eLeonhard Euler (1707–1783)\u003c\/strong\u003e — one of the greatest mathematicians in human history and a Swiss-born intellectual giant whose contributions to mathematics, physics, astronomy, and engineering remain foundational to modern science.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e(PSV 20)\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eIssued by the \u003cstrong\u003eSwiss National Bank (Schweizerische Nationalbank \/ Banque Nationale Suisse \/ Banca Nazionale Svizzera \/ Banca Naziunala Svizra)\u003c\/strong\u003e, this note represents Switzerland's commitment to honoring its scholars and scientists on its national currency — a tradition that sets Swiss banknotes apart from most world currencies, which typically feature political leaders. The note prominently displays the \u003cstrong\u003eSwiss Confederation cross\u003c\/strong\u003e, identifying its sovereign origin, with the denomination \u003cstrong\u003e\"10 FRANKEN \/ 10 FRANCS \/ 10 FRANCHI\"\u003c\/strong\u003e appearing in the four official languages of Switzerland: German, French, Italian, and Romansh — a uniquely Swiss tradition reflecting the country's multilingual heritage.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis particular example is housed in a protective rigid currency holder and elegantly presented within a \u003cstrong\u003ehandsome wood display frame with a black matted backdrop\u003c\/strong\u003e, transforming it into a finished showcase piece ready for immediate display. The note exhibits natural signs of age and circulation consistent with its vintage, with subtle toning and paper texture variations that enhance its authenticity and historical character. \u003cstrong\u003eOnly one note is available, and it bears a unique serial number, making this a truly one-of-one collectible offering.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eNote Information\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eCountry: Switzerland (Swiss Confederation)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDenomination: 10 Franken \/ 10 Francs (CHF 10)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSeries: Sixth Series (1976–2000)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eType: Swiss National Bank Banknote\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eSerial Number: 80J0642601\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePortrait: Leonhard Euler (1707–1783) — Swiss Mathematician \u0026amp; Physicist\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIssuing Authority: Schweizerische Nationalbank (Swiss National Bank \/ SNB)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eGrade: Circulated\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePaper Type: High-quality Swiss banknote paper (cotton blend)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eLanguages: German, French, Italian, Romansh (four official Swiss languages)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eStatus: Demonetized (discontinued from circulation April 30, 2000)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePresentation: Rigid currency holder mounted within a wood display frame\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eAvailability: One (1) note only\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eDesign Details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eObverse:\u003c\/strong\u003e Features a striking portrait of \u003cstrong\u003eLeonhard Euler\u003c\/strong\u003e rendered in fine engraving, with the bold red \u003cstrong\u003e\"10\"\u003c\/strong\u003e denomination prominently displayed at the upper left. Euler's name and dates (\u003cstrong\u003e\"Leonhard Euler 1707–1783\"\u003c\/strong\u003e) appear beneath his portrait. The intricate guilloché background pattern features ornamental rosettes and lathe-engraved security elements characteristic of high-end Swiss banknote production. The denomination is repeated in vertical text along the left edge in four languages: \u003cstrong\u003e\"Zehn Franken \/ Dix Francs \/ Dieci Franchi \/ Diesch Francs.\"\u003c\/strong\u003e The inscription \u003cstrong\u003e\"SCHWEIZERISCHE NATIONALBANK \/ BANCA NAZIUNALA SVIZRA\"\u003c\/strong\u003e runs along the left side, identifying the issuing authority. A small \u003cstrong\u003eSwiss cross\u003c\/strong\u003e appears at the upper left, denoting Swiss sovereignty.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eReverse:\u003c\/strong\u003e Displays an elegant artistic interpretation honoring Euler's contributions to physics and optics — featuring a \u003cstrong\u003ediagram of light passing through a lens system\u003c\/strong\u003e (representing Euler's foundational work in optics) alongside a \u003cstrong\u003eplanetary orbital diagram\u003c\/strong\u003e (representing his contributions to celestial mechanics and astronomy). The bold orange-red \u003cstrong\u003e\"10\"\u003c\/strong\u003e denomination appears alongside \u003cstrong\u003e\"Dix Francs\"\u003c\/strong\u003e in French. The text \u003cstrong\u003e\"BANQUE NATIONALE SUISSE \/ BANCA NAZIONALE SVIZZERA\"\u003c\/strong\u003e runs along the right edge in French and Italian, completing the multilingual identification of the issuing authority. The serial number \u003cstrong\u003e80J0642601\u003c\/strong\u003e appears in vertical text along the design. This artistic, science-inspired reverse is a hallmark of Switzerland's Sixth Series banknotes, which celebrated Swiss intellectual achievements rather than political or geographic imagery.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eHistorical Significance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe Switzerland 10 Franken Sixth Series banknote represents a uniquely Swiss approach to currency design and a celebration of one of history's greatest scientific minds.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eLeonhard Euler (1707–1783):\u003c\/strong\u003e Born in Basel, Switzerland, \u003cstrong\u003eLeonhard Euler is widely regarded as one of the greatest mathematicians of all time\u003c\/strong\u003e — alongside figures like Newton, Gauss, and Archimedes. His prolific output included over 800 published works, and his contributions span virtually every field of mathematics and mathematical physics:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eIntroduced the mathematical notation \u003cstrong\u003ee\u003c\/strong\u003e (Euler's number, the base of natural logarithms)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003ePioneered \u003cstrong\u003egraph theory\u003c\/strong\u003e through the famous \"Seven Bridges of Königsberg\" problem\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eDeveloped foundational work in \u003cstrong\u003ecalculus, number theory, optics, and celestial mechanics\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eFormulated \u003cstrong\u003eEuler's identity\u003c\/strong\u003e (e^(iπ) + 1 = 0), often called \"the most beautiful equation in mathematics\"\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003eMade groundbreaking contributions to \u003cstrong\u003efluid dynamics, astronomy, and engineering\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eHis face on the Swiss 10-Franken note represents Switzerland's tradition of honoring intellectual and cultural achievement — a striking contrast to most world currencies that depict political figures.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eThe Sixth Series (1976–2000):\u003c\/strong\u003e Designed by Swiss artist \u003cstrong\u003eErnst and Ursula Hiestand\u003c\/strong\u003e, the Sixth Series of Swiss banknotes is widely celebrated for its \u003cstrong\u003eartistic, science-and-culture-themed designs\u003c\/strong\u003e. Each denomination featured a different prominent Swiss figure:\u003c\/p\u003e\n\u003cul class=\"[li_\u0026amp;]:mb-0 [li_\u0026amp;]:mt-1 [li_\u0026amp;]:gap-1 [\u0026amp;:not(:last-child)_ul]:pb-1 [\u0026amp;:not(:last-child)_ol]:pb-1 list-disc flex flex-col gap-1 pl-8 mb-3\"\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e10 Franken: Leonhard Euler (mathematician)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e20 Franken: Horace-Bénédict de Saussure (physicist, alpinist)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e50 Franken: Konrad Gessner (naturalist)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e100 Franken: Francesco Borromini (architect)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e500 Franken: Albrecht von Haller (physiologist, poet)\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body whitespace-normal break-words pl-2\"\u003e1000 Franken: Auguste Forel (psychiatrist, entomologist)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe series was issued from 1976 through 2000 and was officially \u003cstrong\u003edemonetized and removed from circulation on April 30, 2000\u003c\/strong\u003e, replaced by the Eighth Series. The Sixth Series remains one of the most beloved and collected Swiss banknote series among numismatists worldwide.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eMultilingual Heritage:\u003c\/strong\u003e The note's denomination appears in \u003cstrong\u003eall four official languages of Switzerland\u003c\/strong\u003e — German (Zehn Franken), French (Dix Francs), Italian (Dieci Franchi), and Romansh (Diesch Francs). This multilingual presentation reflects Switzerland's unique federal structure as a confederation of distinct linguistic and cultural regions, and is a defining visual element of Swiss currency.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eDemonetized \u0026amp; Discontinued Status:\u003c\/strong\u003e As an officially demonetized banknote, the Sixth Series 10 Franken is \u003cstrong\u003eno longer legal tender in Switzerland\u003c\/strong\u003e and cannot be exchanged at face value at Swiss banks. However, the Swiss National Bank historically maintained a 20-year window for exchange of demonetized notes (a policy that has since been amended to indefinite exchange for certain series). The discontinued status makes these notes increasingly scarce in collectible condition and elevates their appeal to international currency collectors.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eThe Swiss National Bank:\u003c\/strong\u003e Founded in \u003cstrong\u003e1907\u003c\/strong\u003e, the Swiss National Bank (SNB) is Switzerland's central bank, responsible for monetary policy and the issuance of all Swiss Franc banknotes. The SNB is widely recognized as one of the most respected and conservative central banks in the world, known for its careful management of the Swiss Franc as a global \"safe haven\" currency. Notes bearing the SNB's authority represent the financial heritage of one of the world's most stable and prosperous economies.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003ePresentation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThis Swiss banknote is securely housed in a protective rigid currency holder and elegantly mounted within a \u003cstrong\u003ewood display frame with a black matted background\u003c\/strong\u003e, ready for immediate display on a desk, shelf, mantel, or wall. The framed setup protects the note while allowing full visibility of its design, vibrant red-orange color scheme, Euler portrait, multilingual inscriptions, and serial number. As with all MetalStacks offerings, the note has been carefully handled and verified for authenticity.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eBecause only one example is available, the exact note shown — including its distinct serial number and individual condition — is the note you will receive.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eFor additional details or collector inquiries, please contact MetalStacks at \u003cstrong\u003e(561) 529-3001\u003c\/strong\u003e.\u003c\/p\u003e","brand":"MetalStacks","offers":[{"title":"Default Title","offer_id":48146696012021,"sku":"MS10FRSWISSCAT14","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0609\/4444\/9781\/files\/MSSTACK4-1_2_b51c6714-4a63-4703-972a-95b1efad6a6e.png?v=1778706865","url":"https:\/\/metalstacks.net\/products\/switzerland-10-franken-banknote-leonhard-euler-6th-series-psv-20","provider":"Metalstacks","version":"1.0","type":"link"}