This is another fine wool trenchcoat for Sam. It has two breast pockets with flaps. It looks really nice.
In Various and Sundry Villains (13x12), Sam wears this coat whenever he is not in the Bunker.
In Funeralia (13x19), Sam wears this coat while they are trying to find Rowena in Oregon, only taking it off briefly to wear a suit to the crime scene at the art gallery. After Rowena captures Sam, she removes it when she (magically) ties him to a chair, we don’t see him wearing it again after that.