DescriptionPocket compass, watch pattern, 5613R, made by Keuffel & Esser Company, New York, no date, circa 1920-1940. Metal and glass, nickel silver watch style case, 1-3/4" diameter; etched metal dial, silvered and marked every 2 degrees in degrees every quadrant; edge bar needle. Radium (R in product number is for 'radium') luminous indicators (N, S, E, W) for night use. This product appears to have been introduced post-World War I. It does not appear in the 35th edition catalog of 1915, but does appear in the April 1920 price list. Dial states "Keuffel & Esser Co., New York." Model number does not appear on this item. Each of the pocket compasses issued by K&E have different dial markings making it possible to distinguish them. Keuffel & Esser Co. main office and factories were in Hoboken in the period when this item was made.