That’s one of the beauties of pinhole photography… and time too. Shoot something complex enough through a rudimentary pinhole made out of foamcore then wait near-enough to 10 years, and good luck trying to identify it later.
Back in 2006, I ran some pinhole photography tests as part of a project for the Art department at UIS. I recently came across the negatives and printed photos(!) produced during this project, and this is the story.