The quarter was ground/polished down on the edge - no doubt about it.
Some notes from wiki on minting since they say it better than I can;
The reeds are imparted into the coin through a third die called a collar. The collar is the final size of the coin, and the planchet expands to fill the collar when struck. When the collar is missing, it results in a type of error called a broadstrike. A broadstruck coin is generally a bit flatter and quite a bit bigger around than the regular non-error coin of the same denomination.
Since your quarter is a tad bit smaller than a standard silver quarter, there is no way it could be struck without the collar and be smaller, the die pressure during minting would flatten the quarter planchet out to be larger than normal (the broadstrike). There is no smooth edged collar die in quarter size, only nickle and cent in modern era coinage use those.
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440
Edited by westcoin
01/13/2012 06:51 am