This type personal field stove is one of the harder ones to find. These were used for everything to boiling coffee, heating meals, and keeping one warm in tent shelters.
Here's one in great condition I own made in 1942. Loosely translating it warns not to use gasoline can cause a fire.
The wick is original as well as the porcelain wick holder. The few I have seen are rusted with holes, missing handles, or damaged. If your into acquiring Field Equipment, add one of these to your collection.