Walther #3/#4 Transition .32 Pistol
This is a scarce model that combines the short slide of the Walther Model 3, with the longer frame of the Walther Model 4. The barrel is also of the longer Model 4 length, and has a long takedown shroud that extends the exposed length of the barrel ahead of the slide.
3 1/32″ long
1 1/2″ wide across top.