I don't remember the boxing gloves, but do remember their slogan to "Put a tiger in your tank"! and you are correct; ESSO and two(?) other companies merged to form Exxon. I believe that it was Gulf who used to pass out pairs of plastic horseshoes to stick onto your car, like a bumper sticker.How about the small plastic Tony the Tiger boxing gloves that the ESSO gas stations would hand out . I might be wrong but later they became Exxon ' .