If you can make out the words and numbers - if any - someone I know should be able to date it a bit more accurately. He has about a dozen 'old' ones from various different eras.
Here's what he told me:
The Scottsdale AZ address with 85282 zip code was from 1961-1966.
The Phoenix AZ address with 85029 zip code from mid-1966 through 1967.
The Phoenix AZ address with 85020 zip code from 1968-1973.
The Phoenix AZ address with 85068 zip code from 1973 to 2000.
The Phoenix AZ address with 85029 zip code (again) from 2000 to present-day.
