Hello,
Currently on ebay is a collection of photos of German Naval aircraft at:
https://www.ebay.de/itm/224669982696...0AAOSwMl9hfuEY
Aircraft include:
Brandenburg W.12 2094
Friedrichshafen FF 33l 1268 (?)
Brandenburg W.29 2512 of Friedrich Christiansen
Friedrichshafen FF 49c 1852 (?)
Regards,
Clint