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Guys,
Here are the pictures of the sign I am looking to buy.
Please help me determine if this sign is an original and what it’s value should be. What are the identifiying markings that prove one way or another about the signs authenticity?

I have included two pictures from Oldgas.com of a similar sign that was deemed original and was sold. I have marked these pictures with, (PIC OF KNOWN AUTHENTIC) for comparison.

Thank you all for your help,
Scott