I think taclough is correct your half dollar would not be the FS-101 (DDO-004/DDR-002) or the FS-102 (DDO-006). Those two are both ODV-003's, yours is the ODV-002. I think yours looks like the DDO-009...note a marker for the -009, a northeast die gouge from behind the head under the R of LIBERTY, on the attached photo of the DDO-009. You can see it in your photo.
Larry Nienaber
