So I remember it was a bit galled when I took it apart the first time a few years ago, and I went to repack it the other night and it's worse than I remember (go figure, rode it about 1000 miles since then) it says J3 on it. 68mm bb. It's 116mm from end to end and about 37mm from the center of each race ridge to the end. End as in the end of the square taper, not the threaded portion.

This is on a 87 Panasonic dx-2000