Tiolene Motor Oil

Which is real? We bought this Tiolene Motor oil Porcelain button at an antique roadshow knowing it was a very nice fake. The Ford sign is real as are the others on the building. When I saw the Tiolene sign I couldnt resist as it is such a nice repro and they won't make them very long either.
The prices on real Porcelain signs at a recent roadshow were astronomical and it was a very bad joke on everyone! Real high prices take all the fun out of collecting as far as we are concerned! The fun is in the hunt, but only when we can find something and it is priced fairly. Keep on Hunting! Just yesterday a guy came by our office and asked if we might be interested in an old "fluted" Wayne gas pump!!!!!! I could not call him back fast enough, but that's a story for another day! Yes we got the pump!