WRONG METAL / WRONG PLANCHET ERRORS
Off metals and wrong planchet errors occur when a
blank from one denomination is
accidentally fed into a press for another denomination. Examples are a nickel struck on a cent planchet and a cent struck on a dime planchet. The coin struck on an incorrect blank will weigh exactly what the denomination of that blank would have been. An even more dramatic wrong planchet error is a coin struck on a previously struck coin of a different metal.
Images courtesy of Byers
1942 One Cent on a brass Ecuador
10 Centavos planchet. Struck at the Philadelpha, PA Mint. An
NGC MS-64 example was reported in the October 10, 2000 issue of Numismatic
News (page 41), where it was described as being one of only two known.
1943-S Bronze Cent - NGC MS-61 Brown. Ex - Ira & Larry Goldberg
Coins & Collectibles, Inc. February 6-9, 2000. discovered in a
Mint-sewn bag of 1943-S steel cents in San Diego, California in the year
1943-S Bronze Cent. Ex - Superior Galleries' "Pre-Long Beach
Sale", October 1-3, 2000, sold for $60,375.00 - Legend Numismatics
1943-S Bronze Cent. PCGS
VF-35. Offered for $89,500.00 by The Mint in an
advertisement in the July 18, 2000 issue of Numismatic News.
2000 Maryland Quarter Dollar
struck on a blank for a Sacagawea Dollar. This was the first
instance in U.S. numismatics of a smaller denomination struck on a larger
Eisenhower Dollar Struck on
Philippine 1 Piso Brass Planchet (illustrated above).
Sources and/or recommended
"Maryland Quarter Struck On
Dollar Blank", Numismatic News, August 29, 2000, pages 1