I have only seen a couple of other examples of the Cyma, far fewer than Omegas or Zeniths. The case is 35mm and appears to be silver although the only marking is a serial number. It has a tight press on hinged back and a dust cover protecting the 15 jewel Cyma movement. A previous owner tried his or her hand at engraving flowers on the casebook but fortunately gave up before they had got too far. See pictures for condition but this watch appears to have been well looked after. I have seen very few enamel trench watch dials in such good condition with the luminous numbers essential for night flying intact. Unfortunately I cannot guarantee reliability or timekeeping on account of its age so please bear this in mind. This is a rare watch - don't let it get away. Overseas buyers please use the global shipping programme or contact me to arrange delivery. Thanks, Simon