170 hp Mercedes D.IIIa
info from Johan Visschedijk
"VERA" was captured by the French on April 21, 1917, later it was handed over to the American forces. Subsequently it was transferred to McCook Field, Dayton, OH, where is was tested during the winter of 1917/1918. It was one of the first to carry a Project-serial, P-13.
Aeroplane Photo Supply No. 5535