I found this pic´s on ebay.de:
1)


It´s a Panzer IVD I think. But have a look at the gun shield and the MG in the hull.
2)

After some weeks of searching I´m not able to identify this one.
Yours
tom!

YoursI cannot make out clearly the registration number, which appears to be 13638. In that case it is the prototype Š-III-6 of 1939. Built by Škoda, the vehicle was armed with a 4.7 cm Škoda Š-III gun and two ZB vz. 37 heavy machine guns. Crew of four, 8 mph top speed, 16-32 mm armor, 18.6 ton weight.
HTH,
David Doyle
Cant help you with a better picture that previous mentioned,only with better picture of the 13638 from the side,if you take a good look you can see that the camoflage pattern is the same .It is definitely the Skoda S-III-6 prototype. The army bought two of them, S-III-6 and S-III-8, numbers 13638 and 13639.
May I ask where did you get the photo, and would it be possible to get a scan with higher resolution?