Do any of you guys(or gals) have late frames with frame stampings that you can ALSO get a peak at the LH frme gusset behind the Z plate... I have found imperial size tube frames with stamping such as R 275 (reynolds feb 1975) and metric sized tube frames without that stamping. only at the very end during nortons demise have I seen ONE that lost the full frame stamping including the "F". I do not believe the F has any identification value to determine reynolds or italian.....imperial or metric tubing. http://atlanticgreen.com/commandoframes.htm Cheers Dave