The picture below shows larger views of this Old Sheffield England Silver Plate Lobster Fork or Pick Tool. Shown are both sides of the pick fork and a close up both sides of the center section. The tool has a detailed image of a lobster on one side and it is marked on the back sides as follows:
EPNS. AI. SHEFFIELD ENGLAND
The pick or fork measures about 7-1/2'' long. It appears to be in excellent uncleaned and unpolished condition as pictured.