BEST GODFATHER E-V-A-H!
Murtagh’s ‘wanted’ poster is based on proclamation broadsides from the eighteenth century. In reality, these types of proclamation probably wouldn’t have depicted images of the accused during our period, but to make sure the audience knew Murtagh was the ‘wanted’ man in question, the Art Department added an image of his face.
His face is drawn in the style of an eighteenth-century etching which was then digitally manipulated and added to the printed poster.
Source: Outlander Community