Poland 1663-AT 30 groszy

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Sincona sale 43, lot 2605
This specimen was lot 2605 in Sincona sale 43 (Zurich, October 2017), where it sold for 100 CHF (about US$119 including buyer's fees). The catalog description[1] noted,
"POLEN, Johann Kasimir, 1649-1668 30 Gröscher 1663 AT. Bromberg. Sehr schön-vorzüglich. (kingdom of Poland, John Casimir, 1649-88, thirty groschen of 1663, Bromberg mint. Very fine-extremely fine.)"
This denomination is listed in the SCWC as simultaneously a gulden or a third thaler or a tympf. It was struck 1661-66 and weighs about one fourth of a thaler whereas the traditional tympf (18 groszy) weighed about a fifth of a thaler.

Recorded mintage: unknown.

Specification: silver, this specimen 6.58 g.

Catalog reference: KM 120, Gumowski 1769.


  • Cuhaj, George S., and Thomas Michael, Standard Catalog of World Coins, 1601-1700, 6th ed., Iola, WI: Krause Publications, 2014.
  • [1]Richter, Jürg, Sincona sale 43, Gold and Silver Coins and Medals, Zurich: Sincona AG, 2017.

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