Bern 1797 1/2 duplone Fr-188

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Heritage sale 3037, lot 30797
photo courtesy Heritage Auction Galleries

This specimen was lot 30797 in Heritage sale 3037 (New York, January 2015), where it sold for $1,412.35. The catalog description[1] noted, "Bern. Canton gold 1/2 Duplone 1797 MS63 Prooflike NGC. Superb strike with glowing mirrored fields. A superior example of this one-year type." This rare type was struck 1797 while Switzerland was a satellite of the French republic. Single duplones (Fr-187) and double duplones (Fr-186) also exist. A half duplone was worth about a ducat.

Recorded mintage: unknown.

Specification: 3.82 g, .900 fine gold, .110 troy oz AGW.

Catalog reference: KM 162, Fr-188.


  • Michael, Thomas, Standard Catalog of World Coins, 1701-1800, 7th ed., Iola, WI: Krause Publications, 2016.
  • Friedberg, Arthur L. and Ira S. Friedberg, Gold Coins of the World, From Ancient Times to the Present, 9th ed., Clifton, NJ: Coin and Currency Institute, 2017.
  • Richter, Juerg, and Ruedi Kunzmann, Neuer HMZ-Katalog, Band 2: Die Münzen der Schweiz und Liechtensteins 15//16. Jahrhundert bis Gegenwart, Regenstauf, Germany: H. Gietl Verlag GmbH, 2006.
  • [1]Bierrenbach, Cristiano, Warren Tucker and Scott Cordry, Heritage Signature Auction 3037, featuring the Empire, the Santa Catarina, the Law and the Santa Maria Collections, Dallas, TX: Heritage Auction Galleries, 2014.

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