Antique 18th Century Pewter Plate or Bowl

Looks like an 18th century pewter plate or shallow bowl. Has several markings on the bottom which I cannot identify. 8" in diameter. Crudely shapes with ample use marks.

Notes:

If you have any questions, please ask before bidding/buying. 

Shipping:

This will be shipped very well padded and protected.  

Thank you.