1966-1972. Reverse-painted glass. Kendall first introduced "GT-1 Racing Oil" in 1966, the same year they commissioned and distributed the first advertising clocks featuring the product. The clocks were distributed to service stations and dealerships. They stopped using advertising clocks in 1972 due to shifts in materials and quartz battery movements. All items are guaranteed authentic by Miller & Miller Auctions. All purchases are eligible for free delivery to the Check the Oil Show on June 26, 2026. 15" x 15" x 4".

Size
15" x 15" x 4".

Condition
Lexan dial retains excellent colour. A fine 5" horizontal scratch is under the number "12". Minor oxidation along lower edge. Minor oxidation with pitting to case. Motor requires service.