A boy's size stainless steel centre seconds wristwatch, Model: Oyster Speedking Precision, Ref:4220, circa 1940,

細節
A boy's size stainless steel centre seconds wristwatch, Model: Oyster Speedking Precision, Ref:4220, circa 1940,
silvered dial with gilt Arabic numerals, sweep centre seconds, 17-jewel movement, case with screw down crown and screw back, dial, movement and case signed, 30mm.
See Colour Illustration (Plate 15)