That must be early Rivendell, when he was running it out of his house and garage? I spent a lot of time on the phone talking bike, his post-Bridgestone plans, and buying a bunch of out of production components from him. Including were a Mavic 631 "starfish" crankset, which is probably what you're describing, a Suntour Superbe Pro brakeset, and Simplex retrofriction shifters--all NOS. Also had Superbe Pro F/R derailleurs. Awesome stuff, wish I still had them.