1970-D Doubled Die Obverse WDDO-009

Description

Ninth in John Wexler's numbered sequence of 1970-D Lincoln cent doubled die obverses, WDDO-009 carries the full designation 1970-D 1¢ WDDO-009 with no known cross-references to other published attribution services. The 1970-D date stands out in the Lincoln Memorial series for producing an extraordinary concentration of doubled die varieties — the Denver Mint's high-volume production that year, combined with the hubbing process used to create working dies, generated dozens of distinct DDO dies that entered service and struck coins for circulation. Hub doubling occurs when a working die receives two or more impressions from the hub during the die-making process, with slight misalignment between impressions leaving ghost images of design elements on the finished die. On 1970-D cents, the horizontal crossbar of the 7 in the date serves as the primary diagnostic zone because even minimal vertical displacement between hub impressions produces a visible extra bar or thickening at this feature. Collectors examining raw 1970-D cents should use 10x to 20x magnification focused on the date numerals, LIBERTY, and IN GOD WE TRUST — the three areas where rotational or vertical doubling most commonly manifests. Because no cross-references exist, attribution relies entirely on matching die markers documented in Wexler's research files, making access to his published photographs or die marker notes essential for definitive confirmation.

Attribution History

• Discovered by Frank Baumann Cross References: None known
• None known; Wexler Variety ID: 1970-D 1¢ WDDO-009
• Expert attribution by Wexler Team

External References