2- Vtg Letterpress Blocks Adv. Wood Block Gasoline Marathon Petroliana Truck The product is a set of two vintage letterpress blocks featuring advertising for gasoline and petroleum companies. Made of wood, these original printing blocks showcase colorful designs related to the gas and oil theme. Originating from the United States, these collectible blocks offer a unique glimpse into the advertising campaigns of Chevron and Standard Oil, adding a touch of nostalgia to any collection or display.