Sorry all, the ebay item number I gave for the Bianchi Pista was wrong. It is 130263471358
I'm told mid '80's, so likely within timeframe, and lugged steel anyhow. Pr oably another one to get the fork drilled with a hand held electric drill f or a brake of sorts, and be transformed from a racing bike into a "fixie".
Nick March, Agen, 47000 Lot et Garonne, France (where people who drill holes in racing bikes to make fixies get to mysteri ously disapear)