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1986 D Kennedy Halve-- Looks Thin And Weight Is Off

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roach's Avatar
United States
364 Posts
 Posted 02/22/2012  8:22 pm Show Profile   Bookmark this topic Add roach to your friends list Get a Link to this Message Number of Subscribers
My daughter was showing me her coin collection and I noticed a BU 1986 D Kennedy half was thinner than the rest. I weighed it on an electronic scale at my pharmacy and it was 11.19 Grams-- A normal one should be 11.34 grams so it is .15 grams light. It is BU so it is not from wear. Could it be a foreign planchet? Or is there this much variance between planchets? I have included pictures of both sides and a comparison of the thickness with another "normal" Kennedy half.

1986-D-Kennedy-Halve---Looks-Thin-And-Weight-Is-Off

1986-D-Kennedy-Halve---Looks-Thin-And-Weight-Is-Off

1986-D-Kennedy-Halve---Looks-Thin-And-Weight-Is-Off
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SilverEye's Avatar
United States
318 Posts
 Posted 02/22/2012  8:44 pm  Show Profile   Bookmark this reply Add SilverEye to your friends list Get a Link to this Reply
That's only 1.3% light, probably within tolerance for clad.

http://www.law.cornell.edu/uscode/text/31/5113

The weight of a nickel can be +/- 0.194 gram. So for a heavier coin, I'd guess that's OK.

Why would anyone take the time to fake a clad coin?
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biokemist6's Avatar
United States
12437 Posts
 Posted 02/23/2012  12:16 am  Show Profile   Bookmark this reply Add biokemist6 to your friends list Get a Link to this Reply
Tolerance for a CuNi clad half dollar is +/-7.0 grains(0.454 grams) so it is normal. Looking at the rim is not the best judgement of thickness which can vary with striking pressure. A weak strike will produce a thinner rim while a strong strike will produce a thicker rim.

For example, compare the rims of a proof vs. business strike. The proof rims will look thicker even though the coins weigh the same.
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