Originally Posted by
T-Mar
A 26.6mm seat post is indicative a straight gauge tubeset. The Italian tubesets that used this size and immediately come to mind are Columbus Zeta and Oria TT 0.9. If the post is slightly under size, it could be Columbus Aelle or Gara. Regardless, all fit the lower, mid-range profile.
As I have discovered with my 1959 Capo, plain gauge moly steel tubing ain't necessarily a bad thing. Lots of folks really like their Raleigh Super Courses, as well.

As long as the frame is of at least this quality, I think I care more about frame size and geometry, and Italian bikes generally seem to handle and ride very nicely.
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"Far and away the best prize that life offers is the chance to work hard at work worth doing." --Theodore Roosevelt
Capo: 1959 Modell Campagnolo, S/N 40324; 1960 Sieger (2), S/N 42624, 42597
Carlton: 1962 Franco Suisse, S/N K7911
Peugeot: 1970 UO-8, S/N 0010468
Bianchi: 1982 Campione d'Italia, S/N 1.M9914
Schwinn: 1988 Project KOM-10, S/N F804069