Verge pick ups are fun.
This time I went to an older burb to find an older bike. Voila, it worked.
It's in a rather pittyful shape and lacks a few components including the wheels.
It's clear, however, that it was equipped with Shimano 600. The remaining components date it to about 1985.
The serial on the BB shell is
L5M1388. The 5 could be for '85. The format is similar to Centurion as I've seen on T-Mar's data collection thread. However, these bikes seem to start with an N as the first letter...
The frame is really light weight at 2020g at a 58 and feels very thin and almost fragile like you wouldn't want to squeeze it to hard.
It has one feature that I haven't seen yet: the shift levers are not left and right of the downtube but in a combination set on top of the downtube. Looks silly - probably should result in better aerodynamics

One more thing: the dropouts are suntour pro.
Well, here are the pictures...
Thanks a lot.