Hi all new here after a lot of searching, i was hoping maybe someone would be able to help me. Ive been trying to find out what frame i have. I bought a old steel frame from a car boot sale about 10 year ago, it had been painted badly with alot of rust. I have no idea why i got the frame but fancied a challenge project. Stripped it back and cleaned it up best i could, and found no identifying numbers or marks other than suntour on the dropouts and the one in the picture
The First photo shows a Gipiemme brake bridge. This part, like the SunTour dropouts, has been selected by the frame builder but doesn't really help to identify the builder.
the tubing on the main frame has been brazed in an unusual style most often associated with Peugeot. The frame is probably not a Peugeot.
Most likely it is from a small volume custom framebuilder or possibly even a decent home or work project. Ultimately it is very unlikely that you will determine the true origin.