Can't remember how I did

New image

Old image

So. I wanted to remake an old image I did to mach a new wooden frame. The old image used some kind of old vintage filter. I think I did it with A.I.

Now ive srearched Internet far and wide and cant fint that effect. Does anyone know how I achive this old dirty filter? I want it to look like an old religous painting. That's the goal.

Thankful for help!