1940-S

San Francisco accounted for 4,550,000 half dollars in 1940, the sole branch-mint half-dollar production of the year given that Denver struck no examples of the denomination during this period. The mintage places the issue comfortably in the available range of late Walkers, with substantial survival across circulated grades and a healthy presence in Mint State through MS65. Unlike many contemporary San Francisco half dollars, the 1940-S carries a somewhat mixed reputation for strike quality, with examples ranging from the typically sharp output associated with the branch to softer pieces showing characteristic weakness on Liberty's skirt thumb.

The Professional Coin Grading Service (PCGS) and Numismatic Guaranty Company (NGC) both certify the date routinely through MS65, with the population thinning noticeably at MS66 and becoming genuinely scarce at MS67. For collectors pursuing the issue in registry-level grades, identifying examples that combine a fully struck skirt and thumb with original satin luster and minimal contact marks requires patience. Authentication concerns are limited for this date, though buyers should examine the S mintmark for proper placement in the lower left reverse field and for the appropriate style consistent with 1940 punches. Die marker references published by both major grading services document the specific S punch position and reverse rock characteristics that distinguish genuine 1940-S strikes from altered Philadelphia hosts. Strike-quality variation within the year produced a range of business strikes from sharp to muted, and selective buyers wait for examples that pair full design detail with original luster.

Because no Denver coin exists for the year, the 1940-S occupies the sole branch-mint slot in any complete date-and-mintmark set and consequently sees stronger collector demand than its mintage alone might suggest. Auction demand for fully struck MS66 examples reflects the absence of any Denver issue for the year, which compresses set-completion buyers onto this single branch-mint date. For the broader story of branch-mint operations during the Weinman half era, see the Walking Liberty Half Dollar series history.