My guess would be they are of 1959 vintage because that was the style of the 50s and a 7.10x15 would have been OEM size for a car the size of a Pontiac. 69 would have a narrower whitewall and by 79 7.10 was obsolete. Armstrong had a factory in Norwalk, Conn. They could be 1949 because I don't see the tread separator discs which Armstrong developed in the mid 50's.
