Yeah, I collect weird stuff, one of them being antique barbed wire.
Top wire: Rowell wire.
2nd from top: Tack wire - has tacks woven in for barbs.
3rd: Bootleg wire - made by clipping one three strands and bending it up.
Bottom: Corsican clip.
The tool is is an antique combination tool.
Everything dates from the 1880s and 90s