Harris & Land, Sheffield, 1863-64, electroplate (i.e., not silver).
ETA: Looks to be in superb condition. Impressive, even if it isn’t sterling. 
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Thank you jeff thats great, love the item and amazed its so old
It’s usually not possible to date electroplate, often not within ±50 years. But in this case we got lucky - the maker was only in business for a couple of years!