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I agree with Mike, these are definitely worth restoring to a certain degree. First I'd give them a good scrub, get rid of the grease, soap scum, all that dirt logged in the scales and the pivot...

TAYLOR WITNESS
NEEDHAM, VEALL (VEAL) & TYZACK
Eye Witness Works, Sheffield
ca. 1865 - 1925

Yours looks like an early 20th century make. Taylor (Eye) Witness are fairly common blades, I'm sure...