Originally Posted by Catnap

Yes, it's all brazed metal, no bondo or fiberglass. I initially thought that there might have been a bondo layer that was stripped from this frame. Then I got my hands on NOS example of the same frame, with original finish, in a smaller size. Looking at it, there doesn't seem to be any bondo or other fillers, so I don't think that was ever part of the frame structure. I have some up-close shots if you're interested. The coolest detail, in my opinion, is the bi-laminate lug work on the headtube.