Why would an oil company put all those words on a utilitarian item (curb sign base) that wouldn't be seen by passing motorists?
Issues with font.
Patent wording, makers marks, and dating mean nothing. Sign fakers routinely use them.
Texaco marketed nationwide. Mobil, Pennzoil, etc bases appear regularly at gas and oil shows. If this was real, it would too.
It was made as a decorator piece.