Postby dognose » Mon Sep 16, 2013 6:32 am
Hi,
Welcome to the Forum.
I'm not aware of the mark, but many silver plating firms besides marking items in their own name, marked wares for wholesale and retailer customers. The 'AP' could possibly not refer to a manufacturer, but may refer to something like 'Argentine Plate', a trade name used by John Round of Sheffield, or something similar.
Hopefully someone has seen the mark before and can offer some information.
Trev.