from my information sources it seems this sword was "Orc" motif from before the design revamps introduced with the apparition of Champion points system.
except from the head on the guard you can see the wings and the shape of the blade indeed matches the orc style which is quite exactly the same. I don't know if this screenshot is an old one or a recent one that could explain a lot
if you are on EU server, could you perchance contact me ingame and send me a link (or copy here the item link)
(you link to chat) then a ctrl-C on the chat window and paste it on notepad or here... this way I can try some addons to check the styleID )
(NB : i'm a style addict, as you could see on my eso-styles.com site and such rarities are a mystery for me... still I really think it's orc, but not-possible to get it anymore, I may be wrong)