The source below mentions the tank Panther, which was found after the war during the collection of trophy equipment by the Czechoslovak army. The tank did not have a turret and in its place was mounted three-barrel anti-aircraft set. The cannons had a caliber of 20mm, so it was most likely a set 2cm MG 151/20 Fla SL 151 (Drilling).
*source:
armada.vojenstvi.cz (Vladimír Francev - Loot armored vehicles in the Czechoslovak army (3rd part))
*source:
armada.vojenstvi.cz (Vladimír Francev - Loot armored vehicles in the Czechoslovak army (3rd part))