SD-10c-1965-01 Split Die

Description

First cataloged split die for the 1965 Roosevelt dime, SD-10c-1965-01 documents a dramatic die failure during the inaugural year of the copper-nickel clad dime composition. The Coinage Act of 1965 eliminated silver from the dime (and quarter), replacing the 90% silver alloy with a copper-nickel clad sandwich bonded to a pure copper core — a change driven by the silver shortage and coin hoarding crisis of the early 1960s. Philadelphia was the sole facility striking dimes in 1965 (mintmarks were temporarily removed from all coins 1965-1967 to discourage hoarding), producing approximately 1.65 billion clad dimes in the first year of the new composition. A split die represents terminal die failure where the working die fractures along a plane that extends across the die face, causing the two sections to shift relative to each other during subsequent strikes. Coins produced from a split die exhibit a visible seam or line across the surface, with design elements on either side of the split showing potential misalignment, height variation, or weakness along the fracture boundary. The transition from silver to clad composition in 1965 introduced new metallurgical variables to the striking process — the different hardness and flow characteristics of the clad planchet may have contributed to unfamiliar stress patterns on dies engineered for silver blanks. Cataloged by Cuds on Coins with no known cross-references, SD-10c-1965-01 captures a die failure from a historically significant transitional year in American coinage. Collectors can identify split die coins by examining for a linear disruption crossing the coin's surface under low-angle illumination, looking for the raised or step-like transition that distinguishes a die-produced split from post-strike damage.

Attribution History

• Discovered by Fred Weinberg
• Expert attribution by Cuds on Coins

External References