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June 12, 2010
Flip Over Double Struck Error
Australia 1951 Penny Flip Over Double Strike Error
In a couple of past entries we talked about double struck coin errors and rotated double struck coin errors. An additional type of double struck coin error is the 'flip over double strike'. This error occurs when a previously struck coin somehow returns to the coining chamber and is re-struck with the previous obverse struck by the reverse dies and the reverse by the obverse dies. This could happen in two different ways, a coin could fall back into the coining chamber immediately after being struck or perhaps a struck coin coin could somehow end up back in the supply of blank planchets being fed into the coining press.
Above you can see an Australian 1951 Penny (with an unfortunate carbon spot) that is a flip over double strike error. The 'obverse' of the coin shows the portrait of George V, however, if you look closely you can see the numerals of a date in the top of his hair, a roo's tail leading backwards from his ear, and the forelegs of a roo in the hair behind his ear. You can see these forelegs in the detail image below.
Detail image of obverse showing roo's forelegs behind Kings ear
The reverse of the coin is a little more spectacular with the King's nose and mouth from the first strike clearly visible above back of the kangaroo. The ghosted image of the top of the King's head runs from the bottom of the kangaroo's back leg in a curved arc around and through the date ending up in the tail. Where it meets the tail you can see the forehead of the King. Below is a detail image of the top of the roo's back showing the King's nose and mouth.
Detail image of reverse showing Kings face above roo's back
Posted by mnemtsas at June 12, 2010 10:37 AM
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