Up for sale is a Oklahoma City, Oklahoma OK Red Seal Filling Stations Gasoline Oil Trade Token
The only mention of this company in old newspapers I could find was this article from Oklahoma City (see last gallery image). This token provided a 2¢ discount on the gasoline price and a 5¢ discount on a quart of oil. It's interesting to see gas was 21.6 cents a gallon in 1925.
The token is made of aluminum and measures 25mm in diameter.