So I have just acquired this Stove from Hungary. 1950's, early 1960's Kolibri. I noticed the valve solder joint was loose on the tank So I dismantled the stove to clean up and resolder it. Upon inspection of the tank. I have identified some Stress Cracks in it. I have shined a very bright light in the tank in the dark and there is no light coming through them. But they are there. So I'm going to go ahead and clean up, flatten, drill holes and brass patch solder these. They wont be scene anyway. Just a good reminder to go over everything on used stoves before filling them up