1991-S American Silver Eagle. Image: Stack’s Bowers / Adobe Stock. By Charles Morgan and Hubert Walker for CoinWeek Notes ….. Collector demand for the 1991-S Proof American Silver Eagle was down 26% from the year before, even as the United States Mint held the price at $23 USD ($57.93 in adjusted 2024 dollars). The Mint sold 511,925 Proofs – a level […]