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1971 P And 1972 D Kennedy Halves

 
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Author Previous TopicReplies: 4 / Views: 237Next Topic  
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United States
49 Posts
 Posted 03/06/2021  12:44 pm Show Profile   Bookmark this topic Add STKRollHunter to your friends list Get a Link to this Message
Looking at two Kennedy halves that are very distinct from the thousands I have searched through. They are dark in color, to begin with. Furthermore, they have a different sound than both silver and clad when ping tested. Finally, they weigh much less than a clad or silver coin at 10.94g (1972) and 10.85g (1971). is there something different at all here?




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United States
1597 Posts
 Posted 03/06/2021  4:19 pm  Show Profile   Bookmark this reply Add Rothery to your friends list Get a Link to this Reply
Looks to have had some corrosive acid applied to the surfaces. And the loss of material because of the acid would account for the lighter weight and different sound in your "ping" test.
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United States
105 Posts
 Posted 03/06/2021  4:20 pm  Show Profile   Bookmark this reply Add halfamind to your friends list Get a Link to this Reply
Looks like environmental damage to me; they both may have spent some time in the ground? That could account for the loss of cupro-nickel mass (should be 11.34g for the clad halves), not to mention enough of a chemical composition change (e.g. oxidation) to change the "ring tone."
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United States
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 Posted 03/06/2021  4:25 pm  Show Profile   Bookmark this reply Add STKRollHunter to your friends list Get a Link to this Reply
Thanks, guys, makes perfect sense to me. I kinda figured that but wanted to ask the professional opinion first.
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 Posted 03/06/2021  6:49 pm  Show Profile   Bookmark this reply Add Dearborn to your friends list Get a Link to this Reply


First thing I thought was 'acid' when seeing the coins..
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