I`m not sure if it was not done earlier but I would like to recommend you a new YT documentary series "Tank Hunter". It focuses on digging up the German WWII vehicles mainly in Polish Pomerania. Its led by Matt Deling, the owner of the Museum of Military Technology and History of Pomerania in Kłanino, Poland (they have Sdkfz 7 and Flak 88 among their exhibits). It is in Polish but with ENG subs.
https://www.youtube.com/channel/UCMF...ecIcNe8SBr6DJw
https://www.youtube.com/channel/UCMF...ecIcNe8SBr6DJw