48 Double Sided Porcelain Pontiac Service Dealership Sign. Great condition on one side with a few more visible hits on the reverse side. The item "Original Double Sided Porcelain Pontiac 48 Dealership Sign" is in sale since Monday, March 12, 2018.This item is in the category "Collectibles\Advertising\Gas & Oil\Merchandise & Memorabilia\Signs". The seller is "leadsled_53" and is located in Huntington Beach, California. This item can be shipped to United States.