I love these 940 movements in Sterling Silver cases. A Hamilton 18 size, 21 Jewel, Lever set, open face, 940 that is STUNNING!!! It has a PERFECT double sunk porcelain dial with black AN, red 5 minute markers, blue spade hands, and signed in script Hamilton Watch Co.  The full plate Nickel movement is GORGEOUS!! It is marked in Gold lettering 21 Jewels, Adjusted, 940, Hamilton Watch Co. Lancaster, Pa. The damaskeening is GORGEOUS!! It is mounted in a HUGE Illinois Watch Case marked Sterling Fine Silver 925/1000 with 4 which I believe to stand for 4 0z. This is a Swing Out Case. This one is as SOLID as they come. SN 477273 Ca. 1905