SINCLAIRE OPALINE MOTOR OIL PORCELAIN SIGN W/ OIL CAN GRAPHIC.
SSP. Sign shows an Ink Stamp, "Sinclair SP-1". A very scare Circa 1930's Porcelain Sign from Sinclair Oil Company advertising Sinclair Pennsylvania Motor Oils and showing the iconic Sinclair script as
DSP. A beautiful New Old Stock example of this Circa 1950's Porcelain Service Station Sign from Union 76 Royal Triton Motor Oils showing a large Quart Can graphic on each side. CONDITION: Sign is in o