Vintage Fireworks Porcelain Sign. 4th of July Celebration Firecrackers Gas Oil USA. View all pictures well for they are part of the description. This sign measures 9″ from one side to the other side and 3″ from the top of it to the bottom of it. This sign has 4 holes for it to be hung up with. This sign has porcelain chipping and rust and scratches. Great addition to any collection or man cave.