Congrats on joining the Bertin owners club. From what I've seen these are fairly rare. I picked up a C-37 (I think) back in November (I think), not knowing anything about them. I was mostly after the Campagnolo NR parts on it, but I learned here at BF that it was a TOTL model, with Reynolds 531 DB, and some sweet-looking lugs, but it also took a pretty good hit, & needs the fork & frame both straightened. So mine is a mixed bag, but should be well worth fixing. I actually might get that done this month, before riding weather truly arrives.