Glossary

Categories

Brockages
space
Counterbrockages
space
Die Adjustment Strikes
space
Die Caps
space
Die Trials
space
Double Denomination
space
Double/Multiple Strikes
space
Dual Countries
space
Experimental Blanks
space
Experimental Strikes
space
Experimental Surface
space
Feeder Finger Strikes
space
Gold Die Trials
space
Gold Errors
space
Gold Off-Metals
space
Martha Washington
Test Pieces

space
Mated Pairs
space
Mules
space
Multiple Errors
space
Off-Centers
space
Off-Metals
space
Overstrikes
space
Pattern Die Trials
space
Pattern Errors
space
Pattern Mules
space
Platinum Errors
space
Proof Errors
space
Spectacular Errors
space
Transitional Errors
space
Two-Headed Coins
space
Two-Tailed Coins
space
Uniface Die Trials


slabblankslab

Double and Multiple Struck Coins

When a blank planchet is struck by the dies, the normal procedure is for the feeders to eject the struck coin out of the collar and into a chute. If there is a malfunction and the struck coin isn't ejected, it may receive a second or third strike by the dies. A multiple struck coin can happen in many ways and have many combinations of errors.

Major mint errors on U.S. gold coins are extremely rare. There are only a few known that are double or triple struck. One phenomenal example is this double stuck 1904 $20 rotated 180 degrees in the collar. Considerable detail remains from the initial strike and is visible under the portrait on the obverse and the eagle on the reverse. This exciting mint error was in my person collection and has been authenticated and certified by NGC and BYERS COLLECTION is noted on the insert.