interesting post. I just got a Bianchi Mixte with similar ITM alloy bars. they have a bit more swept back appearance kind of like a dove bar. I would suspect they are early to mid '80ish uprights and or Mixtes
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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