Prussia 1906-A 20 mark
This specimen is one of a type struck 1890-1913 at Berlin (mintmark "A") and Hamburg (mintmark "J"). Most of the later dates, including this one, are common.
Recorded mintage: 7,788,000.
Specification: 7.965 g, .900 fine gold, .230 troy oz AGW, lettered edge.
Catalog reference: Fr-3831, KM 521.
- Michael, Thomas, and Tracy L. Schmidt, Standard Catalog of World Coins, 1901-2000, 47th ed., Iola, WI: Krause Publications, 2019.
- Friedberg, Arthur L. and Ira S. Friedberg, Gold Coins of the World, From Ancient Times to the Present, 7th ed., Clifton, NJ: Coin and Currency Institute, 2003.
- Craig, William D., Germanic Coinages: Charlemagne through Wilhelm II, Mountain View, CA: 1954.