The two on the right are both mountain goat horns. The second from the right is simply burnished to remove some of the scale, but the horn is rough. It is capped with ebony and holds enough powder to shoot a 50 shot trail. the one on the right end is a polished hourn of smaller dimensions. Its curve was too great to drill in one pass, there being a considerable amount of solid horn to get through, so the maker cut the horn, drilled both pieces and glued the thing back together again with a wood spacer. I prefer primers that have a wooden peg long enough to withdraw and re-insert with the teeth.