Primarily Petroliana Shop Talk Forums Shop Talk Petroliana Forums General Petroliana Discussion Question on a Mobilgas pump plate/sign

Hi guys I bought this Mobilgas pump plate from a guy that said it was a pump plate. I bought it to put on my M&S Mobilgas Script top gas pump. The problem is, it is a little too small and doesn't line up with the existing holes where the pump plate once was. What is this sign and why doesn't it fit? it measures 11.5" from the top to the tip of the shield and 12" across the top. Thanks for any info.