killedbydeath

I just bought what I thought was a budget bike to lock around town and not worry about... but it appears to be a full pro. Anyone on this forum know much about serials and markings for Koga Miyata? It has pro on the seat stay and a serial of J4xxxxx which I think makes it 1981. Also has either g100 or 6100 stamped on the BB shell.
I'm not particularly interested in value - its a great bike. Just interested in finding out more, if anyone on here can share their knowledge it would be appreciated. Any idea how many of these were built?

cheers

Anthony

T-Mar

Yes, a J-code designates 1981 manufacture and it's low enough that it shouldn't be a 1982 model manufactured in late 1981. Koga-Miyata brochures are here: https://www.koga.com/en/service/broc...2000-1976).htm

killedbydeath

Thanks T-Mar. I wondered if maybe a frame built up in 82, good to know its likely to be 81. It was covered in purple paint and converted to fixed gear and nothing original. I thought it would be a v low end KM. I've read that Tange tubing from this era is really good stuff.

killedbydeath

Thanks T-Mar. I wondered if maybe a frame built up in 82, good to know its likely to be 81. It was covered in purple paint and converted to fixed gear and nothing original. I thought it would be a v low end KM. I've read that Tange tubing from this era is really good stuff.