I'm looking at a nice Chesini frame - the material is listed as "Acciaio al carbonio 0.10" which translates to carbon steel 0.10. Am I right in thinking that this is some sort of plain old high-tensile steel, rather than a good quality chromoly/chromium-manganese? The seatpost is 26.8.
The tubing sticker is a Chesini one, not a Columbus one, if that helps.
Here it is:
If it's good steel then I'd be willing to pay for it (Italian bikes in this size are rare... even rarer with clearance for mudguards), but if it's gaspipe then obviously not...