ask for more and better pics. The color is wrong for '84 more like '86/7 and I don't think the DA is original unless it was put on at the shop to get the customer the size color frame they wanted.
That could be a Columbus Formula Two frame but better pics and info is needed.
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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