I found another 2 pics in "Kagero Monografie Vol.16". Not the best source since they took a pic of a C-series with FuG IIIa-U and declare it as FuG X.
By the first pic Kagero writes it's a Bf-110 C-2. Could be possible, but can't confirm it since I have no additional data. Interesting is the position of the clock and the AFN-1 ( field mod? )
Bf-110 C-2.jpg
By the second picture they write "assembly of pilot's cockpit equipment at plant in Augsburg". This indicates this cockpit as one of the D-Series, since Messerschmitt doesn't built any C-Series after the begin of the D-series.
Bf-110 D.jpg
The last C-2 in the Mtt-plant was build in January 1940 and D-Series production started in March 1940 to Sept. 1940.