These early models were essentially standard pocketmen watches fitted to a leather strap but, by the early 20th century, manufacturers began producing purpose-built wristwatches. The Swiss company, Dimier Frères & Cie patented a wristwatch design with the now standard wire lugs in 1903. Hans Wilsdorf moved to London in 1905 and set up his own business with his brother-in-law Alfred Davis, Wilsdorf & Davis, providing quality timepieces at affordable prices; the company later became Rolex. Wilsdorf was an early convert to the wristwatch, and contracted the Swiss firm Aegler to produce a line of wristwatches.
The impact of the First World War dramatically shifted public perceptions on the propriety of the man’s designer watches, and opened up a mass market in the postwar era. The creeping barrage artillery tactic, developed during the war