Hello,
Currently on ebay are the following photos of German naval aircraft:
Friedrichshafen FF 33e 824
https://www.ebay.de/itm/Foto-Gunther...MAAOSwZYVf~e41
Hansa Brandenburg W.12 1183 of Friedrich Christiansen
https://www.ebay.de/itm/Foto-Friedri...cAAOSwcUtf~ezr
Hansa Brandenburg W.12 1407
https://www.ebay.de/itm/Foto-Seeflie...IAAOSwiJRf~ep0
Hansa Brandenburg W.29
https://www.ebay.de/itm/Foto-Seeflie...MAAOSwLl1f~enn
Regards,
Clint