.
... the German system of aircraft designations, "E451" makes no sense. Maybe the censors did a bit more than just retouching details.
But you may try "
B.451/14" or "
B.451/15" , although I don't know if these serial numbers will fit to a specific aircraft built by Aviatik...
And, dear PFFF, you can try to find out, if the biplane really was built by Aviatik - maybe there was another company?
.
__________________
Best regards from Germany
Volker Nemsch
"My words came out fine. The problem is that they were incorrectly processed by your brain."
(???)
"Much to learn, you still have."
(Yoda)
"I never said all that shit!"
(Confucius)