Looks like 1992-S is the last
DDO for the JFK half dollars on the two sites. Probably because of the design, there would probably not be a doubling on the center of the design as it is flat on that area. Just nothing listed since 1992 on this series.
DDR's 1994-S has one listed on Variety Vista. 1973 is the last listing for Wexler for a
DDR. So not an interesting series for these.