I agree with Rick - that style keyholder is not period correct. That style was mid-late fifties.
This is a late fifties Pontiac fob I've had for years. You can see the lack of Zip code ('63) and the
EV prefix on the phone number.
It was originally the same color as the E-bay fobs but I used it for some time. The exposure to grease
and oil darkened it over time.
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