Penny (decimal) with 'blob'

[Jules]

Hi

Found this 1987 penny with a 'blob' on the reverse (see the corner of the port cullis near the N in ONE). Appears to be a bit of metal, perhaps from a previously struck coin, that's got stuck on somehow. Does this sort of thing occur regularly? Thanks.

[Peckris]

Hi

Found this 1987 penny with a 'blob' on the reverse (see the corner of the port cullis near the N in ONE). Appears to be a bit of metal, perhaps from a previously struck coin, that's got stuck on somehow. Does this sort of thing occur regularly? Thanks.

I wouldn't say it happens that often, but the odd blemish/fault does get through the Mint's inspectors, even more these days when you look at some of the modern coins members have shown in the forums. It's a curiosity, no more, but if you like that kind of thing, worth keeping.

[1949threepence]

Just a simple die error.

I've got a 2006 2p which has got a raised blob in the field of the coin. I think it must have originally been a bubble in the molten metal which never flattened out.

[Peckris]

Just a simple die error.

I've got a 2006 2p which has got a raised blob in the field of the coin. I think it must have originally been a bubble in the molten metal which never flattened out.

Forgive me being pedantic 1949! but don't you mean a "die blemish"? If there was a genuine die error in the modern era it would be remarkable and valuable, as witness the 1983 2 NEW PENCE error. (Though strictly speaking, even that is not a die error, but a mule - I'm finding it hard to come up with an example of a die error in modern times).

Edited June 20, 2010 by Peckris

[1949threepence]

Just a simple die error.

I've got a 2006 2p which has got a raised blob in the field of the coin. I think it must have originally been a bubble in the molten metal which never flattened out.

Forgive me being pedantic 1949! but don't you mean a "die blemish"? If there was a genuine die error in the modern era it would be remarkable and valuable, as witness the 1983 2 NEW PENCE error. (Though strictly speaking, even that is not a die error, but a mule - I'm finding it hard to come up with an example of a die error in modern times).

Yeah.......I suppose.

I'm not really sure what you would call mine either, and I'm very open to persuasion on this one. It appears like a little bubble in the upper field of the reverse. Die "blemish", as you suggest, maybe ?

Edited June 21, 2010 by 1949threepence

[Peckris]

Just a simple die error.

I've got a 2006 2p which has got a raised blob in the field of the coin. I think it must have originally been a bubble in the molten metal which never flattened out.

Forgive me being pedantic 1949! but don't you mean a "die blemish"? If there was a genuine die error in the modern era it would be remarkable and valuable, as witness the 1983 2 NEW PENCE error. (Though strictly speaking, even that is not a die error, but a mule - I'm finding it hard to come up with an example of a die error in modern times).

Yeah.......I suppose.

I'm not really sure what you would call mine either, and I'm very open to persuasion on this one. It appears like a little bubble in the upper field of the reverse. Die "blemish", as you suggest, maybe ?

Or other blemish? E.g. on the blank itself? Or a bit of grease or foreign matter that got in for just one strike only?

[Jules]

Is there an online source which describes how modern coins are struck? I might find it easier to understand how errors occur with a bit more knowledge of the manufacturing process, it all seems like interesting stuff.

[1949threepence]

Is there an online source which describes how modern coins are struck? I might find it easier to understand how errors occur with a bit more knowledge of the manufacturing process, it all seems like interesting stuff.

The Royal Mint give this, which is pitifully short, but does give a superficial insight.