unable to read mark, plated or silver

I have a heap of family cutlery, most is marked “EP” but some larger items are not. Im sure these are Silver Plate but cannot confirm this by the marks. I am totaly new to this, could someone pls advise ? :astonished:

[b]I am sorry to have bothered you, marks are for Allen & Darwin 1879 - 1922 Sheffield.

Great site though…[/b]
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Hi there,
The mark is that of Allen & Darwin, but it is the later mark, registered in 1893 and in use until 1922.