Brilliant Proof - A particular type of proof coin that has a full mirror surface in the fields.
Brilliant Uncirculated - A generic term for any coin that has not been in circulation.
Brilliant Proof 1902 Eagle
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1655 1902 Proof-63 (PCGS). A very nice example of this issue. The Proof coinage amounted to 113 pieces, of which 35 to 40 survive today, some being damaged and impaired, others in museums.
These textured surfaces represented a radical departure from brilliant Proofs, having even less reflectivity than business strikes. MD Short for medium date. medal press A high-pressure coining press acquired by the U.S.
Matte-proof Lincoln cents were produced in Philadelphia from 1909 through 1916, and brilliant proofs were struck from 1936 through 1942 and again from 1950 through 1964. Brilliant proofs have been made annually since 1968 in San Francisco.
Interestingly, Pittman states in this 1957 letter that he owned a brilliant proof 1803 Dollar.
Proof Surface - A brilliant proof should have a mirror surface. In most cases there will be little if any frost (i.e. cartwheel) in the fields.
Although reflective, such a coin will not evidence the full brilliance of a cameo or brilliant proof like coin. Not to be confused with impaired or dull proof like pieces.
Some 5,967 matte proofs were made from 1913 through 1916, and 10,189 brilliant proofs in 1936 and 1937.
Today collectors are familiar with the modern brilliant Proof coins. These coins are struck at the United States Mint by a special process using carefully prepared dies to yield coins with sharp features and a mirrorlike background.
Areas on Matte, Roman, and Satin Proofs where the surface has been disturbed. On brilliant Proofs, dull spots appear where there are disturbances; on textured-surface coins such as Matte, Roman, and Satin Proofs, these disturbances create “ ...
An experimental Proof surface used mainly on U.S. gold coins of 1909 and 1910. This is a hybrid surface with more reflectivity than Matte surfaces but less than brilliant Proofs. The surface is slightly scaly, similar to that of Satin Proofs.
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Roman finish An experimental Proof surface used mainly on U.S. gold coins of 1909 and 1910. This is a hybrid surface with more reflectivity than Matte surfaces but less than brilliant Proofs.
Matte - Fine, granular texture on the surface of a proof coin. Matte surfaces have a dull appearance as opposed to the reflective surfaces of a brilliant proof.
Mint mainly from 1907 to 1916, which has sandblasted or acid-pickled surfaces. These textured surfaces represented a radical departure from brilliant Proofs, having even less reflectivity than business strikes.
Roman Finish - This is an experimental proof surface used primarily on U.S. Gold coins in 1909 & 1910. The surface reveals more reflectivity than Matte Proofs, but less than Brilliant Proofs.
Roman Finish
Refers to that regularly found on PROOF gold coins minted in 1909 and 1910. These are much more mirrorlike than the MATTE finish but less so than brilliant proofs.
RPM
Acronym for Repunched Mintmark.
Proofs may have been made with or without the "S" mintmark, but to date the single brilliant proof without the mintmark has not been verified. Trial impressions of obverse without the mintmark are known to be in copper and brass.
 See also: Proof, Brilliant, Coin, Numismatic, Mint
  
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