This is a 1937 dated Erma-Erfurt WWII Nazi flare pistol. The condition on this one is over 90% original black finish. The mechanical function is excellent, crisp and tight. The bore is excellent and the grips are excellent. The serial number is 7816 a. This is about as nice as they come. These are 26.5 mm and Czech flares are currently available on the internet from many sources.