Proof 1968 S Type F Quarter quickly sold on ebay.

There are at least 4 types of 1968 S proof quarter reverses. THe bulk of them are type G which was a new proof only design in 1968. In late 1968 they switched to a slightly modified type B now called type H. In early 1968 a very few type F were struck. The fourth one is a bit of a puzzlement. It is either a type D or type E or both could have been used. Type D and E are nearly identical except type E has an incuse outline on the inside edge of the eagles outer wing segment to the viewer's left. I believe this line would be easily polished off in preparation of a proof die. I have never seen a proof with this line. Thus all my non F, G and H specimens look like a type D. Yet James Wiles and CPG report type E and no type D. In general I don't think you could tell those two apart in polished proof.

I have found less than 1% to be non type G nor type H. Ebay recently had one for sale, a type F. I find the description to be well done. It sold quickly.

1968S is unique in having proof varities and some are quite scarce. It seems like a worthy area to collect. Anybody here interested?

Here is the item in question:

http://www.ebay.com/itm/1968-S-TYPE-F-REVERSE-RDV-006-Proof-Washington-25C-10x-RARER-THAN-1964-TYPE-B-/261233742251?ssPageName=ADME:B:SS:US:1123