Partial Real Photo Postcard? 1900's

I found this photo a few weeks ago at a flea market in a pretty vintage frame. When I took it out and flipped it over, I found that it's printed on postcard paper, with a stampbox on the back and the last part of the letter "d". I looked around and found the stamp box dates the postcard to pre-1907, but it's only a small piece of the postcard, like it's been cut just to print the photo. Would this have been done at that time? Is it still a Real photo postcard, or something else? Thank you!