Antique rocking chair

Hi all. I'm hoping to learn more about this rocker. I don't know much about the origin of it, as my mother bought it years ago in an estate sale in Nova Scotia. The back and seat seem to be not uncommon styles, but the round arms and lack of (or just plain) finials - with just a nub, seem primitive. I also can't see any type of identifying mark on it. Any help/comments/opinions greatly appreciated!