Hi Deb,
Yes, that's definitely a possibility. He could have brought the original with him and when it started to fade he had it copied and re-printed. Without seeing it in really close-up detail though, I can't tell what sort of print it is.
If you want to get the picture dated, let me know. I can post a link on the Photo Restoration and Dating board to get the experts to come and have a look.
If you have the photo, a really detailed scan of one section of the photo (say, her face) as big as you can get it (and in as high a resolution as possible) would help me to work out what the process is. At the moment, because of its great condition and your description, I'm wondering if it's a carbon print, which would be unusual and very nice to have

Cheers
Prue