18 Size Open face pocket watch case. Stem wind lever set movement. 2985499 and is guaranteed 25 years. Bezel and back are screwed. The back is beautifully decorated with a fine and sharply carved. In the center is a heart-shaped shield perhaps for a monogram. There is minimal brassing, hardly visible on the copper-colored base material and some user traces. The number on the back is equal to the number of the case. In the back are some discreet repairer marks. The back and bezel thread up easily, screw on and off smoothly and both seat tight. The crown is sharply defined for a sure grip, and it turns freely but, by design, does not extract, so only a. The bow shows no brassing or damage, and actually holds tight to positions. The crystal has sharp beveled edges without breakage or chips, some not disturbing scratches are present, it gives a clear view of the dial. Movement opening 45.7 mm =. This over 100 year old case is in more than excellent condition and is a worthy housing for a 18S lever set movement. The case is in fully serviceable condition. MONITOR was a trade mark of the Brooklyn Watch Case co. In New York City. The plant was operational from 1865 until 1920. They made silver, gold and gold-filled cases for Illinois, Waltham, Elgin ao, as was customary at the time.