That is a nice looking bike, but the odds of finding an exact year may be slim. Personally I think after a good overhaul and cleaning it will be a good rider for sure.
I don't know why I never got a pair but I always liked those Tipo hubs.
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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