Discoveries

DISCOVERY COIN: Mule Die Clash

slabMint Error News Magazine reports the discovery of the unique mule die clash discovery coin certified by PCGS. It was discovered in change and sent to PCGS for authentication and grading. It is a 1999 Lincoln Cent, graded MS 63 RB and the PCGS tag describes it as "Mule Die Clash Reverse - Discovery Coin."

It is fascinating that mint errors can still be found in circulation and in this case it is an exciting discovery coin and is unique to date. It is being widely discussed in numismatic circles as an exciting mint error.

A mule die clash occurs when two dies that should not have been paired together to strike coins are accidentally or intentionally paired and subsequently are clashed together without a planchet in the collar.

This Lincoln Cent discovery coin is the only known mule die clash from the 20th century and is unique to date. There are 6 known mule die clashes on coins of different denominations from the 19th century:

1857 Flying Eagle Cent that shows a clash from being struck by the reverse die and the reverse die of a Seated Liberty Quarter

1857 Flying Eagle Cent that shows a clash from being struck by the reverse die and the obverse die of a $20 Liberty

1857 Flying Eagle Cent that shows a clash from being struck by the obverse die and the obverse die of a Seated Liberty Half

1857 Seated Liberty Quarter that shows a clash from being struck by the reverse die and the reverse die of a Flying Eagle Cent

1870 Shield Nickel that shows a clash from being struck by the obverse die and the reverse die of an Indian Head Cent

1864 2 Cent that shows a clash from being struck by the reverse die and the obverse die from an Indian Head Cent

This unique mule die clash discovery coin shows the mule clash on the reverse side. There is an arc of incuse letters. Upon careful examination, there are two sets of letters, meaning that the two dies clashed two separate times, at a slight rotation.

It is interesting to note that after almost 20 years, no other examples of this mule die clash reverse are known or have been authenticated and certified by PCGS, NGC or ANACS.

obv

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