And, as expected, this Single Shot Perfected Third Model pistol, having shipped 13 March 1919, has no S & W logo on either side.
When this thread was started over ten years ago, the data situation was still quite a bit spottier than it is now.
There is no disagreement that logo stamping stopped in mid-1917 and resumed in early 1920.
"Made in USA" wasn't applied to Smith & Wesson revolvers until 1923.