[The following excerpt is published courtesy of DLRC Press and its author, David Lawrence This information was originally published in 1991 in The Complete Guide to Barber Dimes]
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BCCS -The Barber Coin Collectors’ Society. When numbers are given with these initials they refer to the volume and issue number of the BCCS Journal.
CDN – “The Coin Dealer Newsletter – Monthly Summary” Also called the ”gray sheet.” It is a monthly wholesale price guide.
DIE CHIP- Small indentation in the die that results in extra metal on the corn itself.
HUB – The coin design, in steel, used to make me working dies.
1947 – Refers to prices listed in the 1947 (1st edition) of the Red Book. An indication of I947 retail prices.
1991- Refers to prices listed in the 1991 (44th edition) of the Red Book. An indication of 1991 retail prices.
NGC – Numismatic Guaranty Corporation of America. The NGC Census Report of August I, 1990 was used to tally the population of NGC certified coins in the date by date descriptions.
0-MINT – New Orleans Mint. An O-mint coin was made in New Orleans.
PCGS – Professional Coin Grading Service. The PCGS Population Report of Mid-August 1990 was used to tally the population of PCGS certified coins in the date-by-date descriptions.
P/L – Proof-like.
PHILIPPINE HOARD – Refers to coins originally sent to the Philippines for local use, hoards of which periodically show up in the U.S. in relatively high circulated grades. The predominant dates are 1898-S, 1899-S and I 900-S — mostly cleaned XF and AU.
PROOF-LIKE – Refers to coins that have mirror (reflective) fields, as proof coins do.
RANKING – The ranking of the total number of mint state PCGS and NGC coins among the 74 coins of the series. A rank of 1/74 indicates that, in this series, the date has had the lowest number of mint state coins certified by these companies. A complete table is in Appendix B
RARITY RATING – The scarcity of the coin relative to otters in the series. See Chapter 3, ESTIMATING SCARCELY
RED BOOK – “A Guide Book of United States Coins” by R.S. Yeoman, published by Whitman Publishing Company, Inc. of Racine, WI. It is considered a retail price guide.
RPD – Repunched date. A date that shows signs of numerals underneath, indicating that the date was punched in more than once. Often the original date position was out of line and then corrected. The entire date may be doubled or only one or more numerals.
RPM – Repunched mint mark. The mint mark has been punched into the die Mice resulting in a doubled mint mark on the coin. Since the doubling appears on the die itself, identical specimens are produced and the variety is considered “collectible”
SHELF DOUBLING – Refers to doubled mint marks (and other details of the coin as well) caused by a torsion between the two dies during ejection of the planchet. Also known as “ejection doubling,” the doubled detail looks like a thin shelf attached to the regular mint mark. Shelf doubling is common on San Francisco Mint dimes of 1893, 1895 and 1899 and other dates as well. To distinguish this type of doubling from a true RPM, look for separation between the doubling (which indicates an RPM) and doubling of the ribbon and other details near the mint mark (indicating shelf doubling). As a rule, shelf-doubled coins command little premium over regular coins of the date except where a triple mint mark (like the 1893-S) has caught collector interest.