I found this similar question but it is about finding hints in the digital file :how-to-identify-photoshop-edited-files.

I want to know if there is a way to do this without looking at the digital file, for example If I only have a print of that photo available.

What markers should I look out for in a photo, to indicate a photo has been edited or tampered with?

Note that I do not have any experience of photography. This is just a question out of curiosity!