Any chance there is a 10spd Drive logo on the underside of the brake bridge? I know they were importing some of them around '89-92ish.
I believe you almost compare any of the semi mass produced bike from the later '80s like your Battaglin, Pinarello, Tomasso, Giordonna, Basso..... and find similarities between the SL or SLX or TSX frames.
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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