1994 20cent Obverse Double Impression?

Thanks Enworb, I really do appreciate your contribution.

But - and I most am probably wrong and can't recall the name for this type of error - it looks to me like the classic case of a coin being retained in the die and being struck again.

And can this be a PMD with the way the imprint does not transerve the collar/neck of the queen?

Somebody, Enworb, anybody, please help me out with the name of this type of error.



... I'm just about fed up with getting excited about a coin that seems to be a PMD. WHAT do those people hope to achieve? I'm nearly put off enough to stop noodling and stop spending a lot of (otherwise constructive) time on looking for unusual coins.

God! How do other forum members stay motivated?

I agree that in this instance it looks like PMD.

I think the other error type you were thinking about is Die Clash, where no coin is in the press and the two dies 'clash' imparting an imprint of each die on the opposing die face.

Any coins minted after then will most likely have traces of die clash on them, but they are revers images.

Some times the clash one side is much more noticeable than the other.

This image is part of a 10c clash with the Lyrebird's feathers on HM's neck.

The error you are describing here is a "brockage" - when a coin gets stuck onto one of the dies, and a second coin is created with a mirror-image incuse design on it. But brockages have no trace whatsoever of the design "underneath" the mirror image, since the die for that side never comes in contact with the coin. So they look more like this.

The only way an "error" like the one in the OP can come into existence is if two perfectly normal coins have been squashed together. And that's far more likely to happen outside the mint than it might happen inside.


As enworb says, many are created "accidentally". For example, imagine you've got a heavy piece of furniture that's sitting on an uneven concrete floor. You need something small, thin and disposable to make it level; a few coins are just the thing. Leave it in place for a few years and your coins will look pretty much like the one in the OP.