Bonded coins are created when the feeder system, which supplies blank planchets to the coin press, malfunctions and jams. When this occurs, a struck coin is not properly ejected and another planchet is fed into the collar and is struck. This struck coin will land on top of the previously unejected strike. These coins will then crush and bond together. This may happen multiple times as more coins bond.

Further Information:

Bonded coins occur when the feeder system, which supplies blank planchets to the coin press, malfunctions and jams. When this occurs, a struck coin is not properly ejected and another planchet is fed into the collar and is struck. This struck coin will land on top of the previously unejected strike and crush and bond together. This may occur many times as more coins bond.

Additional Price Guide Entries:

Multi Struck Coins

Uni Face Coins

Fragments

Proofs

Partial Collar Coins

Wrong Planchet / Off Metal Errors

Off Center Coins

Mated Coins

Martha Washington Test Pieces

Indents

U.S. Gold Errors

Fold Overs

Double Denominational Coins

Die Caps

Adjustment Strikes

Brockages

Counterbrockages

Broadstrikes

Bonded Coins

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