Here is a very nice Hamilton 18 size, 17 Jewel, Lever set, open face, 926 The Union Special. It has a PERFECT double sunk porcelain dial with Arabic numbers, red 5 minute markers, blue spade hour and minute whip hands, and signed Hamilton. It has a great looking full plate Nickel movement marked in Gold lettering 17 Jewels, Adjusted, The Union Special, Hamilton Watch Co. Beautiful Damaskeening!!  It comes mounted in an Illinois SB&B watch case. The Gold-filled case does show wear on the back side. This would make a great carrying watch. SN 592048 Ca. 1906