This is my Hamilton 974. The serial number should place it around 1910 I think. I have a question to the dial design; I have recently seen a 992B (ca 1947) for sale with almost identical design. The font used is the same including the little tail of the hour mark 4. The only difference I see is that on my watch the orientation of the smaller red minute digits is radial while on the 992B they are arranged horizontally. And the dial of my watch is double sunk, the 992B single. Was the same basic design used for the entire period, or is one or both having a non-original dial? I did not include picture of the 992B as it is still for sale, but hope my explanation is enough to give some advise.