On the subject of seat tube diameters...I've been offerred a decent price (I think), on what appears to be an early 80's Moser with the chromed rear chainstay, chromed front fork with "M" etched in the crown.The bike is black with white and black decals. It has the old Columbus tube logo that doesn't identify a "make" ie SL/SLX etc. It's been suggested to me that if the seatpost diameter is 26.8 then the tubing is likely to be seamed as opposed to a 27.2 diameter that would suggest a true SL tubing.
Any comments about this theory, or the frame and it's value would be appreciated.
Warren Young.
someone wrote...
Consider that Campy made the NR seatpost in something like ten sizes, ranging from 25.0 mm up to 27.4mm. I recall that most Italian and French frames (in the early & mid-70s) used seatposts (seat tube inner diameters) of around 26.2 mm up to 26.8 mm, while British frames and the Schwinn Paramount used a 27.2 mm post (with a correspondingly larger outer ST diameter).