Okay so I was at my local thrift store and I spotted a road bike amoung the broken huffys and kids trikes. I did the lift-test and it was probably around 22 pounds or so. It had stem shifters, turkey levers, rubber? tape, and was a 10 speed. Then I looked closer. Shimano 600 front and rear mechs? Tourney centerpulls? sake road champion alloy bars? So I paid the $20 and took it home. The shimano? freewheel is seized and it has Araya 27x1 1/8 rims with no name tires. It actually had newer looking 105 pedals with toe clips but no straps. The rear hub is a wierd 'Suzue' alloy and the front shimano hub is alloy and has '81' stamped on it, which I presume is the year made. Its maroon and measures ~23 inches seat tube length. There are no markings besides 'Made in Japan' above the BB. This is a lugged steel frame with a crome-tipped fork.
Does anyone know what this is? What twilight zone did this come out of? It seems pretty light. I thought Tourney was a mountain group. Is that really Shimano 600/Ultegra? Any knowledge would be appreciated.