Thank you for submitting your item for appraisal. This appears to be a photographic reproduction after an offset print (see small dots of the printing grid), after a painting by most likely John PETTIE (1839-1893), depicting Bonnie Prince Charlie. Such photographic reproductions have been popular since the late 19th century. The one in your possession might date to the last quarter of the 20th century. It is an item purely for home or hotel decoration or it was produced for a cloak & dagger movie.
The estimate is based on similar items sold at auction.