Originally Posted by
unworthy1
Yep those GPM DOs were used by Bianchi more than any other, but I'm sure they did not have an "exclusive"...no serial number anywhere? even the steerer? What size seatpost?
found a serial number:
wmr5363E (this is a Danish bicycle VIN. The W means it’s imported, the mr means it’s imported by Ole Ritter and the e at the end means it’s from 1989)
Ole Ritter imported many many bike brands so that kind of a dead end
nothing on the steerer, but the saddle post is 27mm (it’s stamped on the post “27”)