Help Indentifying a Hallmark?

These salt and pepper shakers were in a box if goodies I bought at an estate sale. I’ve been searching the web for info. on the hallmarks but I’m stumped. I’m guessing it’s silverplate and possibly British but that’s as far as I can get. Can you help w/ identifying and dating? It looks like a “J” an “S” something I can’t make out and then a bird-like figure or possibly a comet shape. All marks are inside shields. Bottom is also marked E143. Thanks so much for your help!
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These are American silverplate. The maker is Forbes Silver Co. which was founded in 1894 as a division of the Meriden Britannia Co. [ref: www.925-1000.com ].

Wow, thanks so much for such a quick reply! You are awesome!