I think I have one too, the serial number is M3M 01822 stamped on the BB. It came to me with a suntour symmetric downtube shifter and Shimano arabesque brakes and ders, nitto stem and a too small seat post. No head badge or other markings on it though so I have been wondering what it could be. Looking on the web I'm guessing it might be a pro tour model but happy to be corrected.
The frame is quite nice, no lightweight, but well put together, and has a lovely sloping forkcrown.
I built it up with some 700c wheels and diacompe long reach brakes and did a few brevets on it but lately have been thinking about restoring it to its former glory.
17052008(001) by
_granty, on Flickr