Overlapping A & G Hallmark on antique pot HELP!

Hey everyone this is the first time i’ve ever posted here. So please help. I have searched this hallmark. Only to find nothing. I swear that I’ve seen it before somewhere though. It is a very very small hallmark on the middle of the bottom of the pot. It is a rectangular or square mark with a very fancy A overlapping a G. From the looks of it is is victorian or english. Please help. Thanks Tim
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