Got  1937 and 1940 STONER machines here, a '36 Gottlieb and a '47 Genco.. they all worked pretty much the same.
That is in nice condition bar the sanding of the artwork... more likely a private import as Nino suggests.
My '37 Stoner Ricochet was just that... American immigrant who brought his milk bar with him and set up shop in Victoria. Family moved to QLD and brought the machine with them where it sat under the house for a few generations of kids to play. Game had had one owner since new until sold to me, but was sited in the milk bar in the late 30's early 40's.
Is there anything written in chalk on the bottom??..When they imported, they just chalked on the underneath who it belonged to and destination... ha ha!! No paperwork.. just chalk work!