Armsmen cant equip Tusker's Old Wound sword

[Zerogeist]

"You have no skill in using this weapon type!" is the message, its a 3.4 1h slash weapon

I am a 35 armsmen at the time of trying to use

Won't allow me to attacha picture due to "board quota"

[Karen]

Item is required level 40 as according to https://camelot.allakhazam.com/item.html?citem=4256
But since OTD is 36 I reduced the required level to that.