Photo or Charcoal Drawing?

Hi, maybe a dumb question but I would appreciate your thoughts on if this is an old photograph or a charcoal drawing? Any ideas? Thank you! d appreciate your thoughts on if this is an old photograph or a charcoal drawing? Any ideas? Thank you!

 

It’s a “solar enlargement” aka “crayon enlargement”, they are almost always sold as charcoal portraits but they’re not.
And there is no such thing as a dumb question.
http://resources.conservation-us.org/pmgtopics/1989-volume-three/03_05_Albright.pdf

 

Thank you for the info!!