I know they used a Zeta grade in England but in a different type of can. I also thought I remembered something about this size being Swiss. I’ll do some digging and see if I have any luck, would be cool if it was a strictly US-issue, fingers crossed

Looking for Michelin items + NJ oil company related items (Mohawk, Guardian, Whiz, etc) + animal-related petroliana + Gargoyle/Shell/Sinclair items