Hi, I apologize for the quality of this image. I am unable to properly scan it until I return to Canada.
From what I can gather it is dated 3/27/1917 and the postmark appears to be from Hungary on -MAR-29.
Names I believe to recognize are "NEUMÜLLER" (who is in the photograph) and "NOLL" (his wifes maiden name).
Any help is deeply appreciated and thanks in advance.