1990P-1DER-007WS Trail Die Reverse

Description

Discovered by Steven Bingham of Missouri, 1990P-1DER-007WS on the 1990 Philadelphia Lincoln Memorial cent displays a 180-degree offset with light fluting into the stylobate under column 3 and moderate step deviation at columns 5, 6, 7, and 8. The step deviation across four consecutive columns indicates the trail die contact applied sufficient force to distort a broad section of the Memorial staircase, creating a lateral band of design disruption visible under magnification. Examined at Stage B mid-die state (MDS), the primary diagnostic marker is a small die dot on the left side of the N in ONE. Die dots — tiny raised circular features on the struck coin — form when minute pits or pores develop in the die face, often from corrosion, trapped foreign material, or manufacturing imperfections in the die steel. While individually subtle, a die dot in a specific and documentable location like the N of ONE provides a reliable attribution point that persists across the die's production run. The MDS classification suggests this die had seen moderate use, with the die dot potentially having been present from early die state or developing as the die surface began to show fatigue. Struck at Philadelphia on copper-plated zinc planchets composed of 97.5% zinc and 2.5% copper, weighing 2.5 grams and measuring 19mm.

Attribution History

• Discovered by Steven Bingham
• Expert attribution by Trail Dies

External References