T-Mar.
I must thank you for your time & expertise in replying to this posting, your knowledge is legendary on this forum, & anyone posting an unknown bike or frame on this forum can only hope for a reply from your good self.

So the best possible chance it would seem to maybe a 1993 Fuji ?

A couple of further points.

I can confirm the seat tube to be 25.8mm I still have the original seat post, with its marking & I also have a unused 1997 seat post of 25.8mm size its confirmed. The bare weight of the frame as seen is 2.69 kg this is of course on my cheap digital scales.

Another thing I’ve not seen on the frames I’ve stripped down before is the fact that the lugs & tubes when placed in a jig have then been touched with a weld to hold them prior to brazing. I’ve not personally seen this method before it maybe common practice, see couple close-up photos.