Hello! I acquired this bicycle from someone a couple of years ago who claimed that the frame was made by hand in Poland but cannot remember the builder.

If anyone has any idea of who may have produced this frame I would be very grateful. Of note is the diagonal bridge between the seat stays and perhaps the heart shaped lugs between what is allegedly Columbus tubing.

Thank you for your help!

I would ask the gurus in the classic and vintage sub forum. Tons of knowledge over there. Good luck and update if you get any info. 👍🏾

Thanks for your help! Will certainly update if I learn any more about the frame.

Mystery solved thanks to unterhausen in the Framebuilders forum:

Originally Posted by unterhausen View Post
The only distinguishing feature is the crooked seat stay bridge, and that might help you identify the builder. Otherwise, the lugs are untouched by human hands and there is no evidence that this was an accomplished builder. I'm hoping the defect at the shoreline of the seat lug is in the paint, which appears to have been applied by hand. If it weren't for the seat stay bridge, I would have guessed it was a production bike. No glaring errors in construction, just that it's unremarkable in every way.

edited: found it. www.gromada.waw.pl
Apparently modified production bike.

Yeah, the quality of the lug work looks like cheap 1970s bike boom era. I had a Peugeot UO8 that looked like that.

>UO8

Sheldon Brown quote:

Some of the low-end models make for a very nice ride if customized with better components. I'm not the only cyclist who praises the excellent handling qualities of the UO-8, Peugeot's bottom-of-the-line 1970s 10-speed. There are probably other low-grade French bicycles as good. The UO-8 frame has unusually long chainstays, for ample heel clearance when carrying rear panniers. The plain-gauge steel frame tubing is a bit heavier than fancier butted tubing, but the added stiffness is welcome when carrying a touring load, and plain-gauge tubing doesn't dent easily like thin-walled butted tubing. A UO-8 is my favorite touring bike. So there!]