Australia 20 Cent 1978 Clamshell Split Planchet Error

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Coin Type:Australia 20 Cent
Grade:Extremely Fine
Year:1978
Mint:Royal Australian Mint
Metal:Cupro-Nickel
Obverse:Elizabeth II (Arnold Machin)
Reverse:Platypus (Stuart Devlin)

1978 20 cent with a mostly split planchet but the two halves have not detached. Planchet split around about two thirds of the coin’s rim forming the characteristic ‘clamshell’ shape that gives this type of error it’s name.

You can read more about clamshell errors here.

Supplied in an archival Saflip.