Originally Posted by
Scooper
Bill, the Prologue was only sold as a frameset and Schwinn's usual practice was to date code the headbadge with the assembly date of the bike which was some period of time after the frame was manufactured. I'm just not sure how a headbadge date code would relate to just a frameset (not an assembled bike).
I defer to your expertise. My 1987 Prologue has a 1987 date code on the headbadge, and the 1988 has a 1988 date code. Both were assembled into bikes later, my understanding is by the LBS. One of mine was "under built" with Shimano 105 stuff, and had Italian wheelset. My other one had Shimano 600 tricolor.
I'll have to post the serial numbers on them.