An early 20th Century 9ct gold open face keyless

An early 20^th Century 9ct gold open face keyless wind Waltham pocket watch, the white dial with black Arabic numerals and outer minute track with five minute intervals noted in red, six o'clock subsidiary seconds, blue steel hands, plain watch case numbered 6984, hallmarked Chetser 1920,  signed eighteen size seventeen jewel movement, model 1883 with damaskeened plates,  numbered 20815492. Case diameter 52mm