Unknown 20120586073

[Annexia]

I have a bike that I purchased several years ago at a youth services recycle shop. They did not know about the bike, and I have yet to find any information on it either. I hope one of you knows the answer. The SN is: 20120586073. I have attached photos in the hope that they might help. Thank you.

 

[black lightning 1987]

Pretty sure that's a 20" 1987 SM400. They originally came with Sugino VP crank, SunTour Alpha 3000 drivetrain, and DiaCompe 960 brakes.

 

[Annexia]

Thank you Black Lightning 1987. The recycle shop installed a Shimano drive and brake sets on it, so it didn't conform to any specs I read.