Bike Dued, my good friend has a Marin Team that looks much like yours. His is satin finish so it looks like polished titanium. He bought it in 93, and still has it. It has the same dropouts and afterburner stays. It is built with Tange Prestige Concept tubing, and is truly a magical ride. His is built with Shimano XT rapidfire plus, 7 speed stuff. He's also got a Marin branded AMP parallelogram fork on it. Very nice frameset that I've been trying to weasel out of his hands for years now but he's not giving it up.
You won't be disappointed. Very nice score!