Chaz sent on some additional pictures of his pre-Deluxe Tappan stove for our enjoyment. We figure this stove was just pre-Deluxe. You can already see the Deluxe design. You can read more directly from Chaz on his blog.
According to the vintage sales material I have, the handles on this stove's burners and storage compartments were just changing over to the Deluxe style around 1940.
I particularly like the back splash on this stove with the "opal glass floodlight" (as the sales brochure calls it). The metal sign showing how to turn the burner knobs is charming. I also like the written instructing how how to light the oven pilot. I think the white switch above the thermostat knob on the main control panel is a "peek switch" to turn on the oven light.
At first we thought this was a Tappan-Philgas stove, but the more I look at the photos, I think it was a Tappan stove propane that was made at about the same time as they were making gas stoves for Philgas. It doesn't have the typical "Philgas" badges, the model number doesn't seem to follow the Philgas-Tappan system (which would make this a 1943 stove), and the badge on the back splash says "Tappan" alone. Chaz, what do you think? Possible?
Again, thanks for sharing!