This is the one I think it is . Description: Light triple spread on UNITED STATES OF AMERICA with medium double spread on stars under those letters and between the rays. Here's the link to images, for the DDRs . http://varietyvista.com/12 Kennedy Halves/DDRs 1968-D.htm Here's the Quick link for which you'll find, DDR-006 . http://varietyvista.com/Variety Master Listings/kennedy doubled dies 1967-1970.htm#_1968-D
I went through that quick list first and check it twice . Seems to be that one . Number 7 tripled and it seem to match pretty good with that kind of tripling .
I like this seller, they do not check the variety sites for what's going on https://www.ebay.com/itm/1968-D-Kennedy-Silver-Half-Incirculated-Doubled-Die-Obverse-Reverse-Variety/182747054433?ssPageName=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2649
I see the seller is either new or has started over again as they only have under 700 sales. Probably new if their missing stuff like this. Again nice addition to the stable. Keep on causing fun! Reed.