Alexander Mitchelson, London. A silver key wind pair case pocket watch with centre seconds

Circa 1770 and later

Date: Circa 1770 and later
Movement: Gilt full plate cylinder, pierced and engraved balance cock, diamond end stone, silver regulation, round baluster pillars, No.782
Dial: White, black Roman numerals, black outer 1/5th second divisions with 5 minute Arabic numerals, gilt beetle and poker hands, centre seconds
Case: Polished inner and outer, signed inner cap No.782, case hallmarked for 1851
Signed: Movement & inner cap, inner case stamped T.W
Size: 49mm