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The Duplone was a currency used in various Swiss cantons in the late 1700s and early 1800s.[1][2] Although there is a wide range of conversions due to the differing sizes and gold contents of different canton's duplones, 1 duplone is generally equal to 16 franken.[3] This conversion is exact in both the cantons of Graubünden and Berne.[4][5] Duplones had a consistent gold fineness of .900 (just below 22 karats)[6] across Switzerland.[2]


  1. ^ "Dictionary of the Coins of the World [D]". Treasure Realm. Retrieved 7 September 2019.
  2. ^ a b "Gold Duplone". Coin and Bullion Pages. Retrieved 7 September 2019.
  3. ^ "16 Franken (Duplone) 1800". Schoeller Münzen Edelmetalle. Retrieved 7 September 2019.
  4. ^ "Coins of the Helvetic Republic" (PDF). Money Museum. p. 2. Retrieved 7 September 2019.
  5. ^ Jan Gyllenbok (2018). Encyclopaedia of Historical Metrology, Weights, and Measures, Volume 3. Birkhäuser. p. 271. ISBN 9783319667126. Retrieved 7 September 2019.
  6. ^ "Information on Coin Specifications". American Gold Investing. Archived from the original on 10 April 2010. Retrieved 7 September 2019.