Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums Known & Suspected Unmarked Petro Reproductions Gulf Supreme Auto Oil flange

And they always list repros carefully.
A thought: if you're correct on this one and others, you are doing the hobby a service. If you are wrong or guessing without in person examination or some other source for your opinion, you are damaging the reputation of a seller AND decreasing the future value of an item that someone may already own.
One would think some circumspection would be in order.