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

Pattern Mules

A mule occurs when a coin is produced with mismatched dies. In some countries, the Mints use dies for different denominations with the same dimensions. In these instances, mules have been known to exist and are not that rare. Mules struck on patterns are extremely rare.

Pictured above is a proof Half Sovereign off-metal mule pattern that encompasses a combination of history, rarity and condition. This piece is the ONLY known certified example and the ONLY known piece as well. The obverse was struck from the regular obverse die intended for the Sixpence issue. The reverse was struck from an experimental reverse die, intended for the proof Half Sovereign issue.