It is great to see how the writings, the bezels, and the hands changed...
Another interesting point is to see how the patina on the tritium indexes changed.
On some generations, it is darker than on others, even older.
I'm very happy with my 1655, even if I would have preferred bigger fonts on the bezel ,and a bigger crown, too.
Hey, by the way, is that 1655 first generation yours?
Best, and thanks for this informative post!