POLARINE Motor Oil Watch FOB. Cast brass with nickle plate, 1 5/8” wide x 1 7/8 tall. This hollow cast Fob has a great Polar Bear logo of Polarine Motor Oil showing on the reverse in nice detail. Below the reverse hopllow cast is an advertisement; “ONE GRADE MEETS EVERY DEMAND FOR A PERFECT OIL FOR ALL TYPES AND MAKES OF MOTOR CARS”. POLARINE was the trademark of Standard Oil Company for their line of lubricants. ALthough the Standard Oil Company was broken up in 1911, the logos continued to be used by the smaller companies remaining. I believe this fob dates from between the wars, Price: $65.00 (B-967g)