I'm not sure which version it is, C or D most likely don't actually see any letters, it says 1978. It is two boards, they have to be separated in order to see the chips, I think E/F version has Sanyo chips(which were supposed to be better for Dolby decoding), the CP55/65 150 card could be upgraded from C/D to E/F. I'd like to try again with a CP65 just to see if it has the Exar set, if I can convince another seller to pull the 150 card out.
Seems like it often costs as much to have records shipped to USA from Canada as it does from Europe, you'd think being on the same continent would keep rates low.