Thanks for starting this thread, Goony, that is a great looking 999 revolver.
I inherited my father's 949, which he bought new. It is in nice shape, I doubt that my father fired any more than 100 rounds through it before he passed on.
It works well in single action, but gets out of time in double action. It probably left the factory that way, I am fairly sure my father only fired it single action.
My wife really likes it, and has pretty much taken it over!
Thanks for the chart, Goony, my father's revolver was made in 1966.