1964 Doubled Die Reverse DDR-011

Description

Eleventh in the doubled die reverse census for the 1964 Philadelphia Washington silver quarter, DDR-011 documents light spread on QUARTER DOLLAR, both stems (olive and oak branches flanking the eagle), and both lower wings, with extra thickness additionally noted on UNITED. The breadth of affected reverse elements — denomination text, botanical details, and the eagle's wing tips — points to a wide-area hub misalignment on this John Flanagan reverse. ZAP's coins reported this variety, contributing to what is one of the most extensively documented DDR censuses in the Washington quarter series. Philadelphia produced an extraordinary 560.4 million quarters in 1964, the final year of 90% silver composition before the Coinage Act of 1965 mandated the switch to copper-nickel clad. That massive mintage required enormous numbers of working dies, each one representing a fresh opportunity for hub misalignment during the die manufacturing process. The stem and wing doubling provides botanical and anatomical diagnostics alongside the textual QUARTER DOLLAR spread, giving collectors multiple zones to verify. Extra thickness on UNITED — distinct from the spread seen on other elements — indicates the hub overlap was nearly precise in that zone. DDR-011's deep census position reflects the extraordinary volume of variety examination applied to the final silver quarter date.

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