Originally Posted by TheOtherGuy
That's the old 2 bolt Record post, or maybe Gran Sport; I can't tell (but my all time favorite vintage post). I think the difference between the Record & GS was wall thickness...? Anybody? The Super Record (2 bolt) had the flutes down the length, alloy cradles, and thinner wall. There were also lots of custom milled posts done that started out as Record or GS 2 bolt, but the fluting was very different in appearance.
If you want a Super Record post that's correct for '82, it would be the one bolt (called Nuovo Super Record), with the bead-blasted top. The Record 2 bolt style was still commonly used in '82 as well, but it wasn't a "Super" (heavier and more old fashoned, but stronger and more adjustable).
Like the wonderful Cinelli 1R stem, the new "Nuovo" Super one bolt post tended to slip unless you got the bolt really good & snug...and then sometimes stripped the threads in the upper cradle. The fix later appeared as a factory heli-coil steel thread insert.
I'll check mine for markings/bead blasting. Everthing else suggests a 82-83 build date ( 82 campy components). My 82 bianchi is all SR and has the single bolt seat post. I've not noticed any other markings such as "M", could this be designation for short., medium, long? Where is the M stamped? will pull out my seat post if needed to see the stamp. Do you have calipers to check thickness mentioned above?
P.S. Mine has no helicoil and is not stripped yet. Perhaps was not tight in the first place?