English Victorian sterling silver pocket watch, chronograph 1/5 centre seconds - Chester 1882

white enamel dial with Roman numerals and a pair of black steel hands plus a centre chronograph hand. A slide activated and stops the movement. The watch is key wound and set. Case nr. 27204. Sterling silver, fully hallmarked Chester 1882-1883, casemaker Joseph Sewill.
Diameter 57 mm. Weight 161 g.
Item condition grading: **** good.
The watch seems to be in working order but may need an overhaul.