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All Forums Category: US Coins and Currency Forums Forum: US Modern Variety and Error Coins

1978-P BU LMC Reverse Blob Of Metal...or Foreign Material?

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SF11Dude
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 Posted 01/20/2018  10:34 am Show Profile   Bookmark this topic Add SF11Dude to your friends list Get a Link to this Message Number of Subscribers
Going through these 1978-P UNC cents and saw what looks like this metal chunk on the reverse.
Is it something stuck to the back, foreign debris? I am reticent to "preserve" it until I get an opinion.
It looks like zinc bloom/rot but the 5% zinc should't cause that should it?
1978-P-BU-LMC-Reverse-Blob-Of-Metal...or-Foreign-Material?
1978-P-BU-LMC-Reverse-Blob-Of-Metal...or-Foreign-Material?
1978-P-BU-LMC-Reverse-Blob-Of-Metal...or-Foreign-Material?
cwb
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 Posted 01/20/2018  10:44 am  Show Profile   Bookmark this reply Add cwb to your friends list Get a Link to this Reply
It looks like corrosion or something stuck to the coin.


Quote:
It looks like zinc bloom/rot but the 5% zinc should't cause that should it?

No
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SF11Dude
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 Posted 01/20/2018  10:50 am  Show Profile   Bookmark this reply Add SF11Dude to your friends list Get a Link to this Reply
Thanks, after your post I used a soft plastic toothpick to pop it off...foreign debris of some kind stuck to it.
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coop
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 Posted 01/20/2018  1:14 pm  Show Profile   Bookmark this reply Add coop to your friends list Get a Link to this Reply
Possible clear grease. It picked up color as it circulated. But you often see this near the rims and sometimes in the bays.
1978-P-BU-LMC-Reverse-Blob-Of-Metal...or-Foreign-Material?
This is easily removed as you did with a toothpick.
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All Forums Category: US Coins and Currency Forums Forum: US Modern Variety and Error Coins



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