Any Help Appreciated

British Silver Reading Silver Hallmarks
1

Any help would be great
CJ & Co with an S and BP

I think Christopher Johnson & Co Is the S for Sheffield or the date but the BP I am unsure of,

any help on information date and value would be great, it is on a small fork

Thanks
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2

I agree Christopher Johnson & Co. S is for Sheffield - electroplate is hardly ever date-coded. BP would be Britannia Plate; i.e. electroplated Britannia Metal. Britannia Metal is a base metal alloy akin to pewter.