1920-D

Denver produced 1,551,000 Walking Liberty halves in 1920, a low figure that places the issue solidly in semi-key territory and the lowest 1920 mintage across all three mints. The D mintmark sits on the reverse at the lower-left rock beneath the eagle's tail, in the consistent branch-mint position adopted from 1917 onward. While the 1919-D claims the strike-rarity title in the early series, the 1920-D follows close behind in both production scarcity and condition difficulty, and many collectors regard it as one of the trickiest dates to find with full strike detail in choice mint state. The combination of modest mintage and chronic strike weakness produces a meaningful supply squeeze at the gem level.

Strike issues on the 1920-D concentrate in the standard Walker trouble zones. Liberty's left hand frequently shows incomplete finger definition, the thumb area of the skirt comes flat on the majority of survivors, and the eagle's central breast feathers and talon are soft on most examples. Full Strike pieces are condition rarities even at MS63, and fully struck MS65 examples bring significant premiums. Authentication requires the 12.50 g weight and 30.61 mm diameter verification along with detailed inspection of the D mintmark style. Genuine 1920-D D punches show upright serifs and proper alignment with the rock below the eagle's tail feathers. Added-D forgeries built on Philadelphia 1920 hosts have appeared in the market, and the surrounding field should be checked under magnification for any tooling disturbance or interrupted luster. Reeded edges on authentic pieces appear sharp and original.

Population data from Professional Coin Grading Service (PCGS) and Numismatic Guaranty Company (NGC) shows the 1920-D thinning quickly above MS64, with MS65 examples scarce and MS66 coins genuinely rare. Full-strike gems are particularly difficult and bring meaningful premiums over typical certified examples. Registry collectors actively compete for top-grade pieces with bold detail. For background on Weinman's design and the production history of the branch-mint Walkers, see the Walking Liberty Half Dollar series history.