I'd be patient finding a value on the 3f.
The copper (war related/material supply affected) tank and burner design are steps in the stoves part in development/evolution history.
Not finding any for sale in a quick search,and some of the collectors comments suggest it's a prize to the right person.
Many were brown. Yours being green and having the sticker adds more time to find out if the color adds to rarity...
Patient good luck to you.
My younger stoves list. When for sale, around original to double original price, depending on condition and box or not; but are more common.
Finding what a collector has paid for a similar lately would give the best idea of potential value ,with consideration of condition factoring.
The stoves can be restored though and some collectors are simply looking for particular models or parts.
Yours looks pretty nice.
The other stove looks like a Prest-O-Lite?
That will keep you patient on old stove sites too.
Nice scores!
