1964

The 1964 Philadelphia Roosevelt dime carries a circulation mintage of 933,310,762 pieces, by an enormous margin the highest Philadelphia mintage of the entire silver Roosevelt run and a direct consequence of the U.S. silver supply crisis that defined the year. As silver bullion prices rose toward and ultimately past the monetary value of silver coinage in 1963 and 1964, the public began withdrawing silver coins from circulation in bulk, hoarding rolls and bags against expected further price gains. The Treasury responded by ordering all three mints to run silver dime production at maximum capacity through 1964 and into 1965, with the 1964 date frozen on coinage struck through at least mid-1965 to prevent further hoarding waves on subsequent dates. The 1964 Philadelphia figure thus represents production well beyond the calendar year, with Denver pushing past 1.35 billion on the same basis. The coin carries John R. Sinnock's 1946 design without modification.

The 1964 follows the silver-era specifications: 2.5 grams, 17.9 millimeters, 90% silver and 10% copper, reeded edge, the final year of those specifications before the Coinage Act of July 23, 1965 eliminated silver from circulating dimes and replaced the metal with a cupronickel-clad composition. Authentication on a Philadelphia circulation strike includes the standard weight check at roughly 2.45 to 2.55 grams, confirmation of no mintmark on either side of the coin, and inspection of the reeded edge for completeness. Strike quality on 1964 coins runs from average to sharp, with the Full Bands designation requiring complete separation on both pairs of horizontal bands wrapping the torch. The enormous production volume produced wide variation in strike sharpness, with mid-run dies often showing softer central definition.

In the market the 1964 trades at entry-level prices through circulated and lower Mint State grades, with the silver melt floor anchoring the bottom. PCGS and NGC populations are extremely robust through MS-65 and MS-66 because the date was widely hoarded in roll and bag quantities during the silver crisis and many bag-fresh rolls survive intact today. The date is a common roll filler in Roosevelt date sets without a Key or Semi-Key premium, and condition-rarity buyers focus on strict-FB MS-67 and MS-67+ examples, which trade into the three- and four-figure range despite the overall population being among the largest in the series. For broader context, see the Roosevelt Dime series history.