Swordsman Archive

Have anyone seen this one weird 2 handed sword that is on the wall behind Nym's chair? It is also found in the armory in the same fortress. It looks like a crescent and the handle is built into the blade itself. This sword looks so cool, what is it called? and where can I get one?

i think this is the scythe weapon that they are still trying to implement into the game. we get certification for it at two handed IV.