Hello,
Currently on ebay is a photo of an Aviatik P.14 :
https://www.ebay.de/itm/394991108867...QAAOSwRe9lTnFA
It has the numbers 151 below the cockpit. I'm unsure if this relates to the army Bestell Nr. number or perhaps more likely a manufacturers number. Having said that a P.14 152/13 is known to have existed,but that number is visible on the rudder which is not visible here.Has anyone an id for the aircraft types B.149/13 & B.150/13 as this may (or may not) help.
Regards,
Clint