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

1971 P And 1972 D Kennedy Halves

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Author	Replies: 4 / Views: 261
STKRollHunter New Member United States 49 Posts	Posted 03/06/2021 12:44 pm 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? Report this Post to the Staff

Rothery Pillar of the Community United States 1669 Posts	Posted 03/06/2021 4:19 pm 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. Everything can change in just one day......... Best Lincoln roll find & Nicest WOODY find "If there are no dogs in Heaven, then when I die I want to go where they went." - Will Rogers Report this Post to the Staff
halfamind Valued Member United States 116 Posts	Posted 03/06/2021 4:20 pm 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." Report this Post to the Staff
STKRollHunter New Member United States 49 Posts	Posted 03/06/2021 4:25 pm Thanks, guys, makes perfect sense to me. I kinda figured that but wanted to ask the professional opinion first. Report this Post to the Staff
Dearborn Pillar of the Community United States 1067 Posts	Posted 03/06/2021 6:49 pm First thing I thought was 'acid' when seeing the coins.. Collecting since 1972. Learning from then on "Tell me and I forget. Teach me and I remember. Involve me and I learn." -Benjamin Franklin My Dansco 7070 type set coin count: 31/76 My Dansco 8176 Eisenhower set coin count: 36/36 Report this Post to the Staff
	Replies: 4 / Views: 261

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

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