Anyone know of this half dollar error?

[CardsNCoins]

Tonight while searching halves I found a 1979 half that was noticeably smaller than the other halves in the roll. It also weighed about 1 gram less. The edge still has a nice reed so it wasn't purposely made smaller.

I checked eBay and didn't see anything similar, so then I went to Google. The only thing I found was an article about half dollars that were struck on Susan B. Anthony planchets in 1979 and 1980 (maybe other years too). Here is that article:

http://www.numismaster.com/ta/numis/Article.jsp?ad=article&ArticleId=4741

Any light that can be shed on this would be greatly appreciated. Here is my small 1979 half dollar:



Thanks, Nick

[uthminsta]

My Red Book says the half should weigh 11.34 grams and the Susan B Anthony dollar would weigh 8.1 grams. In the back it says that the Kennedy on SBA planchet is very rare... Inconclusive, but maybe that info will help.

[bman]

can you post a picture of the reeded edges of both coins together.

[CardsNCoins]

can you post a picture of the reeded edges of both coins together.

The coin in question is on the left in the scan.

[appjoe]

Tonight while searching halves I found a 1979 half that was noticeably smaller than the other halves in the roll. It also weighed about 1 gram less. The edge still has a nice reed so it wasn't purposely made smaller.

I checked eBay and didn't see anything similar, so then I went to Google. The only thing I found was an article about half dollars that were struck on Susan B. Anthony planchets in 1979 and 1980 (maybe other years too). Here is that article:

http://www.numismaster.com/ta/numis/Article.jsp?ad=article&ArticleId=4741

Any light that can be shed on this would be greatly appreciated. Here is my small 1979 half dollar:



Thanks, Nick

I don't think it's this but check out this Kennedy half that was shrunk by a electromagnet http://teslamania.delete.org/photos/ShrunkenCoins1.PDF when you get to the link scroll down and you'll see it

[PennyPauper]

Looks alot thicker than the other half next to it.
Can you measure its diameter and see how much smaller it is.
I found this link and maybe its from a wrong stock. http://www.coinworld.com/NewCollector/E ... nchet.aspx
Who knows,but most potiental error coins are not errors or worth much anyway.
Check its thickness with a Ike dollar,just a wild quess,but maybe leftover stock ment for ikes which were replaced with SBA in 1979.