Philadelphia - Coins

coins \ Coin \ United States of America \ P10c \ Patterns \ 1864 \ Philadelphia

Collectible coins include various types such as patterns, which are experimental or test pieces struck by mints to evaluate designs or production methods. The 1864 P10c, or the 10-cent pattern piece, was produced in Philadelphia and represents a unique example of pre-production experimentation in U.S. coinage. Patterns are highly sought after by collectors due to their limited mintage and historical significance in the evolution of coin design.