Kings Pattern Silver-plate Basting/Serving Spoon Hallmark ID

I’ve given the spoon a clean and polished however it has been well used - would love some help with identifying the hallmarks, please

vintage spoon 1
Vintage spoon 2
vintage spoon

EM&Co is Elkington Mason & Co of Birmingham. Elkington were unusual among electroplaters in having a private date coding system. A is their date code for 1886.