Rare Pennzoil Sign with wood frame back – 12″ x 70″ 1948 N.O.S

Pennzoil  metal tin Sign with wood frame back – Red background.  Very good condtion.  – 12″ x 70″  1948 . This sign is in very good condtion. New Old Stock. The sign reads in the right lower corner reads: A.M -6-48.