United States, Two and a Half Dollars, Proof, 1829

United States Mint, Philadelphia. Obverse: Capped head of Liberty facing left, stars around, date below. Reverse: Eagle, motto above, denomination below. This 1829 proof quarter eagle introduces us to a modified coining technique and to a slightly modified design. The coin (and its multiple, the half eagle) would henceforth be struck using a one-piece, "close" collar. Also, a third die whose vertical striations produced the familiar "reeded" edge we still see on coins today.
Striking the quarter and half eagles in a collar resulted in better metal flow and sharper detail. But it also required modest changes in the obverse and reverse designs. The work was carried out by William Kneass. As many as a dozen 1829 proof quarter eagles including this one may exist. Most have been damaged by handling.
Object Name
date made
U.S. Mint. Philadelphia
Physical Description
gold (overall metal)
0 (overall die axis)
0 (overall die axis measurement)
struck (overall production method)
overall: .15 cm x 1.9 cm; 1/16 in x 3/4 in
place made
United States
ID Number
catalog number
accession number
Coins, Currency and Medals
See more items in
Political History: National Numismatic Collection
The Value of Money
Data Source
National Museum of American History, Kenneth E. Behring Center
Credit Line
Transfer from the United States Mint
Publication title
Glossary of Coins and Currency Terms
Publication URL
Additional Media

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