I came across this gun today that a coworker had. There were only 20,000 variation 4s of the Model 4 made in 1928-1929 and is considered "rare" for a Walther Pistol. The Pistol is marked on the right slide "Wafffenfabt~k Walther Zella-Mehlis (Thar)" so it is a 4th Variation.
Anyone know how much these are worth or have one?