Vintage B&W Photograph in frame

I found this in the attic of my new house and to be honest I'm not even sure exactly what it is.

I was just going to throw it away but my partner said it MAY be an antique, so I decided to ask the question.

It seems to be a B&W photo portrait of woman in a wooden frame. The frame is damaged in quite a few places and dirt seems to have gotten into the inside.

There are some markings on the black in blue chalk that I cannot quite make out but it seems to be numbers.

I will attach photos of both sides.

Thank you for taking the time to look, I am fully aware this item is most likely nothing worth note but I thought I would take the time to ask the question, just in case :)