Originally Posted by
88prelude
If everything is in working condition and it fits, you could've done a lot worse for 25€.

It could take a lot of work identifying the bike not even the paint seems original. If you're really up for it:
If there's no serial number look closely at the drops for any stamps, pull out the fork to see if anything is stamped on it, measure the seat size and heat tube size to start getting general ideas of where the bike was produced. Identity all other parts on the bike (hubs, wheelset, derailleurs, freewheel etc). If the CLB Racer brakes are original, they were made from 73-77 and most likely on a French bicycle. The Z series shifters were from 1984 and I've also seen them on low end Peugeots. Pull out the bottom bracket and see what the make is and if it's French threaded. There is a long list of French makers who produced low end bicycles during the boom. If it's English threaded there's just as long a list to consider.
All of this might be a wild goose chase though because it looks like quite the Franken bike so there might never be a clear answer.
Since i was planning on restoring it, i have taken off the paint.
Once i made it to the steel, there were letters becoming visible.
I worked on them and the inner side of the head lugs clearly says 'BCM' now.
I found it twice stamped in the frame, very small on the inner side of the head lugs, once on the top, one on the bottom.
Anyone has photos of BCM frames/bikes, that i can use as a reference to restore the bike?
Thank you!