Originally Posted by
kingsting
The serial numbers were on the rear dropout from 1952 up to sometime in early to mid 1970. They were moved to the headtube in 1970 until the Chicago plant closed.
Your S/N appears to be BC**** which would be February 1967.
There will be additional date codes on the cranks, stem, and possibly the hubs.
I think this is most likely because of the seats. 1967 it is.
Thanks