1955-D Over Mint Mark OMM-007

Description

OMM-007 on the 1955-D Jefferson Nickel is an over mint mark variety, a category distinct from a repunched mintmark: rather than a second impression of the same letter, an over mint mark involves one mint letter punched over a different letter — in this case, a D applied over the original letter from a different mint designation. Catalogued by VarietyVista under die pair UVC-409, DMR-010. Die state progression covers three documented stages: Stage A is Early Die State; Stage B is Middle Die State; Stage C is confirmed to exist. The 1955-D Jefferson Nickel was struck in the standard 75% copper, 25% nickel alloy at the Denver Mint. Over mint mark varieties on Jefferson Nickels represent cases where a die originally prepared or designated for one mint was redirected to another, with the new mintmark punched over the original. The OMM designation provides the first confirmed identification number in the VarietyVista over mint mark sequence for this date. Cross-reference: VarietyVista OMM-007, UVC-409, DMR-010.

Die Markers

• UVC-409
• DMR-010
• Stage A:
• EDS (unconfirmed)
• Stage B:
• MDS (unconfirmed)
• Stage C:
• Numerous light die scratches on lower Reverse – LDS
• Obverse is LDS

External References