Front View: Here you can see that not only are there three buttons in the front, but also a drawstring tied in a bow.
Front View: I also included this picture since it is clearer than the first picture, but you can't see all the details due to the bonnet ribbons.
Side View: You can see that there is a dart in the middle of one side of the front piece. You can also see that there is a seam where the collar meets the spencer.
Back View: The back of the spencer comes up enough to see the back of the empire waist. The collar is a completely separate piece. The standard Regency spencer back is featured here.