well unfortunatly I do not think even Bianchi can decipher their serial numbers. not even on Reparto Corse frames so ti is sort of a visual comnparison to old catalogs. however I think Tmar has some sort of data base somewhere he uses.
rothenfield is your frame a 59cm? that would be what the frame size. Bianchi offered a TSX in the '92 catalog with a Chorus/Athena Ergo mix. then in '95/'96 they offered a TSX UL as a frame and also as bike.
between about '93 and '98 Bianchi offered various El and ELOS frames and complete bikes. again as Bianchi was not inclined to keep serial numbers the best way to identify it is by matching the catalog.
OH Rothenfield what is the Columbus sticker on your fork? most Columbus frames from that era shoe a chromed unicrown fork. yours looks like an older Sl fork with that sloping crown.
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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