Front View: Similar to the brown spencer, this spencer has three buttons and a drawstring tie at the bottom. From the looks of it, it seems that the collar and bodice pieces are connected. In other words: both sides and the collar are one piece that joins in the front with buttons.
Partial Front/Side View: Here you can see a little more clearly than the first picture that the sleeve is made up of two parts: an over sleeve and an under, full sleeve.
Side View: Here you get more of a sense of what the top sleeve is like. I'm not quite sure how the top sleeve was made.
Back View: It's a little hard to see, but there does appear to be seam lines that show that the back is a standard Regency spencer back. You also can see evidence that the collar is one piece with the front, since there is no seam in the middle of it.