Standard Oil Zerolene Polar Bear Flange Sign

Made in U.S.A. 1910 - 1929. Double-sided porcelain (DSP). Die-cut. Promoting Zerolene motor oil, Standard of California's early motor oil. The Zerolene product line was phased out around 1936 when the company introduced and transitioned its lubricant marketing to RPM Motor Oil. Unmarked. 24" x 24.5" x 2.25". Authenticated by The Authentication Company (TAC #402850). All items are guaranteed authentic by Miller & Miller Auctions. From the Barry Yorgason Collection.

Condition
Heavy bending with associated chips. Side A: Good colour and gloss. Stable crazing with areas of dullness. Field chips. Side B: Very good colour and gloss. Touch ups to chips throughout field, particularly above the "Zerolene" script. Touch ups to chips in margins. Pitting at flange.