Its a folk art style and looking at the numbers and the way they are made was possibly by someone who did not have much education !! The scene makes me think of France or Italy but can not be sure !! I have not seen that mark before !! Can only be sure that the middle letter is P !! Can`t make sense of the other letters !!
What is your location and where did you get this ashtray ?? It looks more like a commercial piece to me !! Not something that was created by an artist !!