1911-S

The 1911-S Indian Head Half Eagle came out of San Francisco at 1,416,000 pieces, the largest output any S-mint ever gave the series. That figure looks reassuring on a price guide, and circulated examples really are easy to find. The picture changes the moment a buyer asks for a Mint State coin. Most of the 1911-S production went straight into commerce on the West Coast and in the Pacific trade, and the bulk of survivors that escaped the 1933 gold recall are worn pieces. The date earns its Semi-Key reputation not from rarity in absolute terms but from how steeply the supply thins above MS-62.

A genuine 1911-S weighs 8.359 grams and measures 21.6 mm, with a specific gravity near 17.16 for the 90 percent gold alloy. The S mintmark on the reverse should sit cleanly in the field with the rounded San Francisco serifs typical of this period, and any added or recut mintmark on a coin of this date deserves professional attention. The condition story traces back to the design itself. Pratt set the entire field as the high point of the coin and gave it no raised rim for protection, so even brief circulation flattens the surfaces and pulls a coin well down the grading scale. NGC has certified roughly four pieces at MS-65 with none at MS-66, and PCGS shows similar numbers, which puts true gems in the population-rarity column rather than the price-guide column.

Auction comparables show the gradient clearly. PCGS AU pieces regularly sell in the high three figures, MS-62 examples bring low four figures, and the last MS-65 to cross the block realized $29,900. A small Florida estate hoard of about 125 examples once reached the market, but nearly all graded MS-61 to MS-63, which confirmed the shortage at the gem level rather than relieving it. For most buyers the practical target sits in the MS-62 to MS-63 range, where the date offers original mint surfaces at a price that matches what the issue actually is. For more on Pratt's incuse design and how this San Francisco date fits the larger run, see the Indian Head Half Eagle series history.