Originally Posted by
CyclesMakaron
And so it should be... The frame belongs to a series built in summer 1992, BSC threads appear ~D2500 - this is an experiment, confirmed by correspondence with EMC (the only one I know for sure - that maybe there are other series). Your frame is even more unique than you thought
I better take good care of it!
It will be interesting to see if there is any info on the steerer tube.