More Help Appreciated

Off small tea spoons, no city mark but company is George Smith (III) & William Fearn from what I could discover, also is that George 3rd with a date of 1790? Would anyone have accurate information and value of each spoon?
Many Thanks
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Yes, Smith & Fearn, London 1790. Georgian Old English pattern tea spoons are currently selling on the well-known auction site for about 10 GBP.

thankyou