Got one on Saturday, #6082x. Your gun should have a half cock; if not, the notch is probably broken out from the gun being dropped.
The First Model .38 Single Action is sometimes called the "Baby Russian", and the name is often extended to the second model as well. (It is difficult to see why, since the .44 Russian has a conventional trigger and guard, but the name has stuck.) At that serial number, the stocks should have the letters "S&W" on them, as the familiar logo was not yet in use.
That is a nice list. The .38 S&W is the least valuable if the others are in anything like decent condition. The Remington-Eliot can run two grand or more and the Russian in can run up to $4-5000 depending on model and condition.
Jim