It would be rude not to, thanks for the cue, drT!
Very rare indeed. Actually most of the Peaches I’ve seen were from 1988, with the odd one from 1989. Don’t think I’ve ever seen a 1990 but there might be the odd one out there.
The bass on the left is from 1987, it’s one of the prototypes EBMM made for the SR5. It has some unusual features, as does Tony Levin’s, so his might also fall into that category.
The SR4 is a 1988, the other SR5 a 1989.