WD-25 Gun Carrier

The WD-25 tank destroyer was a German weapons carrier. It was built on a Hanomag Raupenschlepper Tractor.  It is similar to the WD-50.
Variants:

1.
Name: WD-25
Type: Gun Carrier
Origin: Germany
Year: 1927
Produced: 1

Length: 3.3 Meters
Width: 2.2 Meters
Height: 1.4 Meters
Weight: 3300 Kilograms (~5000 Kilograms including gun)
Speed: 6 km/h

Crew: 2

Primary Armament:
-37 mm TaK L/45
Secondary Armament:
-one machine gun

Gun Flexibility:
15° Elevation
5° Depression
15° Left
15° Right

Armor:
-Hull
0 mm Front
0 mm Side
0 mm Rear

Sources:

http://www.aviarmor.net/tww2/tanks/germany/wd_schlepper.htm

http://www.alternativefinland.com/german-tanks-interwar-decades/

http://ftr-wot.blogspot.cz/2013/02/lesser-known-german-tdsassault-guns.html