I don't think I would pay 500 for an unknown frame. will the seller give you better pics so possibly someone can identify it? how newish are the parts and are they ALL 600 or just the deraileurs?
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“One morning you wake up, the girl is gone, the bikes are gone, all that's left behind is a pair of old tires and a tube of tubular glue, all squeezed out"
Sugar "Kane" Kowalczyk