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 Replies: 15 / Views: 368 |
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New Member
United States
8 Posts |
First post guys! I think I stumbled upon something. I can't find known error on this coin however it seems to be some sort of doubling, die or double strike I have no clue. lol. What do y'all think? Thanks for your help!    |
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Pillar of the Community
 United States
5802 Posts |
Welcome.
If you are referring to the raised "circle" below the mint mark, that is a plating blister.
It is caused by a break in the copper layer that allows the underlying zinc layer to oxidize. As it oxidizes, it expands, creating the raised area.
Sometimes, the break in the copper layer is more obvious than other times.
Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Bedrock of the Community
United States
19255 Posts |
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Bedrock of the Community
Canada
21661 Posts |
First, a Doubled Die is not an error, it is a variety.
What you have is damage to the 7 and a plating blister
on the D,very common on zincoins.
Edited by JimmyD
06/20/2026 10:08 am
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Bedrock of the Community
United States
75224 Posts |
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Moderator
United States
98548 Posts |
 to CCF. |
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Moderator
United States
190135 Posts |
to the Community! |
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New Member
 United States
8 Posts |
Thanks everyone! I was thinking the line that cuts the 9 and 7 down the middle through most of both numbers. If it is anything at all it's so slight it's pry not worth much anyways. lol.
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New Member
United States
8 Posts |
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New Member
United States
8 Posts |
 Sorry everyone. Upload wouldn't work for me. |
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New Member
United States
8 Posts |
Thanks for the help Jimmy. I was under the impression that anything outside of the planned coin specs/design was considered an error. This isn't correct?
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Bedrock of the Community
Canada
21661 Posts |
Quote:
This isn't correct Right, that is not correct. It is only an error if it happens during the actual striking of the coin. Varieties are a change to the original striking die. Anything that happens to a coin after it leaves the striking chamber is damage. |
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New Member
United States
8 Posts |
I appreciate the info. I understand that PMD isn't an error variety. This penny has what looks like doubling of some sort to me. So on each number of the date there is a distinct line tracing the number. I know it's super minor and probably worthless. lol. But are you seeing what I'm seeing on this zoomed in area of the 7? Thank you everyone for your patience! Happy hunting!  Edited by Mulhollen
06/25/2026 11:19 pm
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Bedrock of the Community
United States
75224 Posts |
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New Member
United States
8 Posts |
Oh okay, makes sense. I appreciate your help! Is there a way to determine if a coin is from a doubled die vs. a double strike? Other than looking at a known error/variety list?
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New Member
United States
8 Posts |
Whoops never mind. I read your hyperlinks. Thank you!
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Replies: 15 / Views: 368 |
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Posted 06/20/2026 06:59 am
