To-day I picked up an American Flyer HO 5318 Hudson, the model is from 1946, but the molds to make it are from the late 30's.
After the war AF upgraded their HO line to have smoke units and chuggers (and I think some had whistles too). A while back I saw this video:
Which made me want one, but what I didn't know is that smoke in the tender & smoke in the boiler did not perform the same, smoke in the tender was vastly superior. So when I received my 1950's set (which has a 443 Hudson), I was disappointed the performance wasn't like the 5318 I saw in the video.
Anyhow, earlier this evening I finally purchased a 5318 after years of casually browsing around for one. It needed some work, but I decided to wing it and bought it for $75.
I don't see too many older models with vertical motors.
On/off switch for the smoke unit/chugger
Here it is next to the 50's 443
And compared to a scale Broadway Limited Hudson, it's pretty close!
You add fluid in this little cap, the tube that feeds the smokestack can be seen between the locomotive & tender.
Unfortunately it was missing a rear truck, so to make up for it I was given this 1930's era frame along with it to cannibalize it from.
The tires need to be glued back on, but other than that it seems to be in pretty good shape for it's age and both motors run strong.