IDB-1C-1983-07R Interior Die Break

Description

Unlike cuds, which form when die steel fractures at the rim, interior die breaks occur entirely within the die face — away from the rim edge — creating raised irregular areas on the struck coin. Cataloged as IDB-1C-1983-07R by Cuds on Coins, this reverse interior die break on the 1983 Philadelphia Lincoln Memorial cent documents a fracture that developed within the interior of the reverse die. The distinction is mechanically significant: rim fractures follow predictable stress paths at the die's sidewall junction, while interior breaks originate at subsurface flaws or metallurgical inclusions deep within the die face. On the struck coin, an interior die break presents as a raised, irregularly shaped area that may follow design contours or cut across them unpredictably. The 1983-P cent was struck on copper-plated zinc planchets weighing approximately 2.5 grams, the composition introduced in late 1982. Philadelphia's massive 1983 production campaign, exceeding 7.6 billion cents, generated an extensive catalog of die failure artifacts. Attribution by Cuds on Coins.

Attribution History

• IDB-1C-1983-07R
• Expert attribution by Cuds on Coins

External References