I have a chance to trade for this porcelain shell, but want to make sure it is real before I do so. I believe it is, but want to be 100% certain. Can anybody share their opinions as well please?

Looks ok to me

pictures of:

too compare.. ...

* I see differences, your 2¢

IMO - sign is questionable .. ...

I noticed that the one in question has a red outline around the perimeter but I think that would just be from a different manufacturer and different part of the US.
I have one that has the outline but it does not have a date or manufacturer's mark.That is just my two cents and we all know what that is worth....Dale

this one on ebay matches sign of subject .. ...

https://www.ebay.com/itm/48-Shell-s...l-OIL-Gas-Co-Porcelain-Sign/114120362811

The op's and one on Feebay look fine to me, but I'm no Shell expert.

It looks good. The no red boarder is earlier than the red boarder. There is also is also a half red boarder.

[quote=MATT ALVAREZ] The no red boarder is earlier than the red boarder. /quote]

.. ...

1936 .....no red boarder

1937 .....red boarder

Haha so still getting some mixed messages I guess. It's a 48" if that matters

Alex, .. ...

sign is: