Martin Hall & Co. bowl

[fgasoi]

I have a silver-rimmed salad bowl with a mark indicating it was made by Martin Hall & Co. Company was active from 1854 to 1936 in Sheffield, London and Chester. However, the marks bear no relation I can see to these cities, nor can I interpret them to give me a date. I am not even sure of the correct orientation - as you can see the makers mark is sideways on. Any help would be appreciated. Images are attached.

[dragonflywink]

The other marks are EPNS for Electro Plated Nickel Silver. The rim is silverplated over a metal alloy containing no silver. There is no date mark.

Cheryl ;o)

[fgasoi]

Many thanks!

Frederick Gasoi