Rare Swiss Gunmetal Buttonhole Watch, c1900

A rare and interesting late Victorian/Edwardian Swiss-made buttonhole watch for a gentleman. The watch itself is encased in a gunmetal, blued steel case with gunmetal blued steel hands with a white enamel dial with gilt dots and Arabic numerals with red twelve. The time is set by depressing the pin-set button on the case band and rotating the winding crown. A side view of the watch shows the central case extension with the dial housed atop a stalk allowing this extended housing to be inserted through a jacket lapel buttonhole, revealing just the watch face. Dial which protrudes through the buttonhole is 15mm diameter. The main movement housing is 29mm. Weight 22 grams. In good condition with some tarnish to the case. The watch ticks when wound. This item appears in the book, "How the Watch was Worn, A Fashion for 500 Years" on page 197.