Small metal 'counter' with the number "2" marked on to represent the level of enemy aircraft. These were mounted on wooden blocks together with other markers indicating the height of the aircraft and then moved about the plotting table of 'Operations' room by WAAFs using croupier type 'rakes'. Approx. 3 x 2.5cm in size. Found at West Malling some years ago. Very good used. Stock code M17671.