AN EARLY 20TH CENTURY BRASS GRAVITY CLOCK BY THE WATSON / KEE-LESS CLOCK COMPANY the brass frame with a notched rack supporting the weighted circular case, containing the movement with anchor escapement for the vertical dumb-bell balance driven by the weight of the clock as it descends down the rack, with painted Arabic glass dial,  26cm high The clock is ticking but not fully tested or guaranteed. This type of clock was first introduced as the Crystal Palace British Industries Fair in 1920 and described by the makers as 'A revolution in clock construction. No keys. No springs. Moving parts reduced to a minimum giving greater reliability at less cost'. Related Literature: British Horological Journal, August 1994, p.490.