Early fuel/gas cap and mounting ring differences

My 7/70 #6521 is a bit of an anomaly. It is a Canadian market non-emissions car and has the early cap with the clip on the back for a chain but the mounting ring has no provision for a chain.

I've owned the car since 1978 and never replaced the cap. My guess is it either came this way or the previous owner lost the original cap, with no chain, and replaced it with what he (or she) could get.

Edited July 4, 20222 yr by CanTechZ