Hi, I bought this frame from a flee market. Doesn't have any marks on it, I am pretty certain it is titanium because of the small diameter tubing, non-magnetic, light and no paint.
If you could please help identify the maker and/or model, if you've seen something like it before or any comments would be welcomed.

The bottom bracket is a weird thing: although the frame is old, the BB is custom built to take in sealed bearings and an axle goes through them (it seems so ahead of it's time). I have a problem with the bearings because I can't find the size that fit.
I wish to build a fixed-gear out of it. Hopefully if I identify the maker, I may find the correct size bearings.

Thank you for your opinions.