CU-1C-1979-04 Rim Cud

Description

Specifically designated as a rim cud in the Cuds on Coins catalog, CU-1C-1979-04 documents the fourth confirmed die rim separation on 1979 Philadelphia Lincoln Memorial cents. The explicit "Rim Cud" classification distinguishes this entry from potential interior retained die breaks by confirming that the fracture extends fully to and encompasses the coin's raised border — the outermost design element that surrounds the entire circumference. When the corresponding die rim section separates, the resulting void allows planchet metal to fill the cavity during each strike, creating a smooth, raised mass that bridges the space between the design field and the coin's edge. Rim cuds are the predominant form of cud variety because the die rim represents the structurally weakest zone — a thin projection of tool steel that absorbs concentrated stress at the die-collar interface during every striking cycle. Philadelphia's 1979 cent production placed sustained demands on its die inventory throughout the year, and the documentation of at least seven cuds for this date confirms a normal distribution of terminal failures across the die population. CU-1C-1979-04 carries no supplementary cross-references and is identified exclusively through its break geometry as documented by Cuds on Coins. The 1979 Philadelphia cent was the last to be struck without a mint mark, using the standard 95% copper composition. Attribution by Cuds on Coins.

Attribution History

• Discovered by Marvin L
• CU-1C-1979-04
• Expert attribution by Cuds on Coins

External References