QUERY: HOW TO MEASURE AN IRREGULARLY SHAPED COIN

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V14 2011 INDEX E-SYLUM ARCHIVE

The E-Sylum: Volume 14, Number 42, October 9, 2011, Article 9

QUERY: HOW TO MEASURE AN IRREGULARLY SHAPED COIN

Leon Saryan writes:

Here's a question for the experts: Is there an accepted way to measure and report the diameter of an irregular (i.e. not exactly circular ancient or medieval era) coin? If the coin is irregular the diameter will vary depending on the way it is placed within the caliper. Let's say for example the maximum diameter of a coin is 22 mm, and the minimum is 20 mm, can the diameter be reported as 21 mm? Should one rather say it is 20-22 mm, or 21 +/- 1 mm, or what?

Good question. Is there an accepted practice in this regard? -Editor

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A Guide Book of United States Coins is the world's most popular annual price guide for U.S. coins, tokens, and other numismatic items. It's also one of the best-selling nonfiction titles in the history of U.S. publishing�more than 22 million copies in print since 1946. Add the 65th edition to your numismatic library: Order at www.WhitmanBooks.com or call 1-800-546-2995.

Wayne Homren, Editor

The Numismatic Bibliomania Society is a non-profit organization promoting numismatic literature. See our web site at coinbooks.org.

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