Google hasn't been much help here. Saw this in an online auction. I've got a few similar burners to the one on the right, and no idea what they're from. They're similar to an M-1941 burner but with a much longer fuel tube and slightly different wind shield. And I'm not even sure the thing on the left *is* a stove, but if it is, what stove is it? It doesn't look like the two burner medical/vehicle stoves I've seen.
The one on the right is the valve that screws into a fount, the piece sticking up is the Fuel/Air tube with its metering rod tip sticking out. You would flip the little lever to draw it into the tube and open the pickup for running what ever that goes to. You may want to post a photo or two of the top of that (the part sitting on your counter, as the whole thing is upside down) so we can see it. As to the other, no clue!
Welcome @Terrh , Thank you for posting. i "should" wait 'til you have it in-hand and shy away from questions about online images. Anyway, stove on left did look familiar right off, i did find what my vague recall was in the ref gallery: US Military? Vietnam era? BUT it's not a match. Very similar (if same size), dunno if they might be related.
Yep, I know what it is! Just not sure what stove it's for. Here's a picture of 2 of the ones that I have, along with an M1941 burner/fuel valve assy. Note the much deeper pickup compared to the M1941 assembly on the right. The wind screen is also stainless and has that extra bottom part on the "unknown" ones. Hey, I think you're right! Great memory! Interesting little stove too. I like anything that can run on diesel. A shame they would seem to be rather hard to find. I'm not buying the lot since it seems to be crazy expensive (4 stoves, some misc parts, a few lantern glasses, nothing tested, for $1800) but I was very interested to figure out what that thing was. And the only thing I actually "need" from the lot are the 1/4 globe bits, which aren't that hard to find for a reasonable price.
One on right . 5000 BTU burner for different applications and font size Coleman 520 521,523,525, and possibly others . The one on the left appears to be upside down in the case . Probable Natick labs T-58-2 sort of a limited production prototype . Rare find as I see it
That's an upside down Natick prototype stove. Very cool units but this lot pricing is bananas unless the tanks are all full of high grade Columbian you know what.