A coworker of mine, gave me her late, husband's 12-speed road bike. It is super light. No head badge. On top of the fork is the letter, "B," stamped into it. It has Shimano 600 components through out. There is a serial number on the bottom of the frame: AS431099. The rims are, Wobler Super Champion Gentleman 81. On the handle bars it has a, 3 ttt on one side and the Olympic symbols on the other with Competizione on the other side. Have found listings for the components on eBay, but, still drawing a blank on the frame. What say you all?