My '69 RS has all 5 original 14" rally wheels. At one time, I verified that the code, on all 5 of the Kelsey Hayes ralleys, was the same. Can't seem to find that info right now. Guess I'll have to note it again next time one of the wheel is off the car.
As an aside, when I bought the car in 1991, it actually had what may have been one of the original tires on the spare in the trunk, a Goodyear Polyglas E7014. That tire is still the spare tire in the trunk to this day. Hope I never have a flat, as I would not want to have to consider the use of that tire. The tires that I have on the car are repro Polyglas E7014's to match the one in the trunk. If not the original tire, looks good.