I am not a shell guy, however, I say this sign at a local flea market and it got my attention as to AeroShell and the authenticity of this sign. I did some google searching and saw that all signs for AeroShell, SHELL was in the shell portion of the sign, right where the silver empty space is on this one.
I could not find any silver/black images (but I did not do an exhaustive search,) and ran this picture by some others and it was not familiar to them either.
It was recommended to float it past you all here and you could shoot it down or provide some history if it is real.
This sign is a thin metal (tin or aluminum?) and the design is pressed from the back making it raised on the front.
There is nothing on the back, I cant recall if it was silver or white, but I do know it was plain. No porcelain or enamel either.
Not sure why this became an itch that needed scratching, but hoping you all could provide some clarity. I have not been back to see if the sign was still there, but I believe they were asking somewhere in the 75.00 department.
Thanks for the help.
Brian