1828 Proof

The 1828 proof Capped Bust half dollar ranks among the most elusive issues in the entire Lettered Edge proof run, with surviving population estimates ranging from eight to twelve pieces. This Sheldon Rarity-8 standing places it in the company of the absolute scarcest early American silver proofs, and decades of careful census work by both major grading services have failed to push the known roster meaningfully higher. The year itself produced significant variety in the business strikes, with multiple die marriages catalogued by Overton and confirmed in subsequent research, but the proof preparation appears to have been confined to a tiny handful of strikings produced for presentation purposes and for the small numismatic community that maintained working relationships with Philadelphia Mint personnel during the Adams and early Jackson administrations.

Diagnostic authentication for an 1828 proof half dollar follows the established Lettered Edge proof protocol. Composition holds at 89.24 percent silver, with a weight of 13.48 grams and a diameter of 32.5 millimeters. The edge bears the inscription "FIFTY CENTS OR HALF A DOLLAR" in raised letters across its full circumference, which should appear crisp and complete on a genuine proof. The obverse and reverse fields must show full mirror reflectivity, capable of producing a clean cameo image of nearby objects when angled correctly under direct light. Strike sharpness is non-negotiable through Liberty's hair locks, the cap details, and the eagle's wing and breast feathers. The rim displays a squared, knife-edge profile rather than the gentle slope of a circulation example. Professional Coin Grading Service (PCGS) certification with proof designation is the de facto market standard.

Acquiring an 1828 proof is a project measured in years rather than months for most collectors. Auction availability is irregular, and competitive bidding has driven prices steadily higher across the past two decades. Collectors interested in this rarity should also review the Capped Bust Half Dollar series history.