Did you ever attempt this kind of photography: a handsome bottom passes one day while you have your camera out and ready and you decide to capture the moment?  If so, you know how hard it is to accomplish: somebody walks in front of your target or the target turns just as the shutter clicks.  So whoever managed this at some point between 1979 and 1985 (to judge by the hair, especially) deserves some credit.  But nothing is written on this 5x7 to tell us who the lucky photographer was