The Survival Estimate represents an average of one or more experts' opinions as to how many examples survive of a particular coin in three categories: 1) all grades, 2) 60 or better, and 3) 65 or better. These estimates are based on a variety of sources, including population reports, auction appearances, and personal knowledge. Survival estimates include coins that are raw, certified by PCGS, and certified by other grading services.
Numismatic Rarity converts the Survival Estimate for a particular coin into a number from 1 to 10 (with decimal increments) based on the PCGS Rarity Scale. The higher the number, the more rare the coin.
Relative Rarity By Type
Relative Rarity By Type ranks the rarity of this coin with all other coins of this Type. Lower numbers indicate rarer coins.
Relative Rarity By Series
Relative Rarity By Series ranks the rarity of this coin with all other coins of this Series. Lower numbers indicate rarer coins.
P. Scott Rubin:
The 1831 Proof Quarter Eagle is an extremely rare coin. There are probably not more than five true Proofs of this issue. Historically, Proof specimens of this year have been offered at auction at a ratio of about one out of every five listings, but most of the coins described as proofs are really prooflike business strikes. With a mintage of only 4,520, and most of the coins well struck, it appears that many of the business strikes were show prooflike surfaces.
The 1831 Quarter Eagle is known in three die states. At some point in the year, the dies clashed, then the dies were lapped to remove the evidence of the clashing. This lapping may have added a prooflike surface to some of the last coins struck.
This is one date that should be certified in order to prove it is a true Proof striking. The auction records I have reviewed dating back to 1855 show that ninety-six out of five hundred and seven auction sales claim to have been for Proof specimens. This number is obviously overstated because of the many Prooflikes being offered as Proofs.
David Akers (1975/88):
Approximately five or six proofs are known.
PCGS is not responsible for the accuracy or authenticity of Ebay listings.