Hello,
Currently on ebay are a number of photos of German naval aircraft as follows:
Gotha WD.14 possibly serial 1625
https://www.ebay.de/itm/X5400-Foto-F...QAAOSw9opfjAXQ
Hansa Brandenburg W.12 serials 1186,1402,1217,1212
https://www.ebay.de/itm/X5399-Foto-W...4RfjAWHRegards,
Clint