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 Replies: 9 / Views: 1,180 |
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Valued Member
United States
336 Posts |
I have 2 of these, the one on the left weighs 7.12g and the one on the right weighs 7.27g Any info on these would be great!   *** Moved by Staff to a more appropriate forum. *** |
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Pillar of the Community
United States
676 Posts |
The one on the left looks like it is an iron based alloy and the one on the right looks like a copper based alloy, which would explain the difference. Copper is much denser than iron, so more atoms can fit into the same area, which causes it to be heavier(atomic weight, mass, etc. also has to do with it).   |
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Valued Member
 United States
336 Posts |
Any ideas of values for these?
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Pillar of the Community
United States
676 Posts |
No, wait for someone else to respond.
The mods may move this topic into another forum to get a better response.
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Valued Member
United States
336 Posts |
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Moderator
 United States
56855 Posts |
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Pillar of the Community
Australia
9386 Posts |
More than likely environmental damage. They are very common, so not worth more than a few cents.
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Moderator
United States
188130 Posts |
Quote:
The mods may move this topic into another forum to get a better response. Done.  |
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New Member
United Kingdom
11 Posts |
Value is 2 pence each. About 2½ cents.
1971 2 new pence coins were bronze (97% copper).
Coins with steel cores did not appear until 1992.
Edited by peterh
03/31/2023 12:03 pm
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Bedrock of the Community
United Kingdom
17918 Posts |
I get several of these in change each week. It's still the most common date of 2p coin in circulation!
I can't explain the weight difference - officially it should weigh 7.12g, but there must be a certain amount of tolerance and in 1971 the quality control was probably not that great as they just wanted to get hundreds of millions of new coins out as quickly as possible in readiness for Decimalization.
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Replies: 9 / Views: 1,180 |
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Posted 03/29/2023 9:45 pm
