3 Gröscher 1760, Königsberg Mint. 1.45 g. Mintage for Prussia during the Seven Years' War. Small date. Diakov 687 (R3). Bitkin 757 (R2). Olding 456. Sehr selten / Very rare. 25 roubles according to Petrov. 15 roubles according to Ilyin. Vorzüglich / Extremely Fine. Mit Prägeglanz / With mint luster.

From the auction World Wide Coins of California 38, Santa Rosa, November 2000, lot 540.