The APRIL 1987
No idea where this might have been taken, but it was April 1987. It's interesting that most often what is written on the back of the photos is simply a date; not a specific date, just a month and year. I'm guessing it was believed that just by looking at the photo Charlie and his wife would remember where it was taken.
Click on image to see it larger.
I think Charlie would have made a good catalogue model. I can see him in a Sears or Montgomery Wards. He was perhaps not sophisticated enough for Spiegel.