I have a Old Austrian sears frame that I found being thrown out and made into a fixed gear. I've had it for a few months and it would always make a odd noise coming from the bottom bracket. I never got to opening it up until it died on me and seized up a few months ago. I've opened it up today and it seems one of the bearing cages got ruined. I do not know what style of bottom bracket this is though and what I can replace it with. It seems to be a combination of cottered and American one piece. Does anyone know what kind of crank this is or what I can replace or repair it with?