The 1971-S 40% Silver Proof "Brown Eisenhower Dollar" is a distinguished collectible marking the series' inaugural year. Struck in 40% silver, it honors President Dwight D. Eisenhower and the historic Apollo 11 Moon landing. The obverse features Eisenhower’s left-facing portrait by Frank Gasparro, while the reverse showcases the Apollo 11 mission insignia with an eagle landing on the Moon clutching an olive branch. Presented in original government packaging, this proof coin combines presidential tribute with American space exploration history, making it an exceptional addition for serious collectors.