This papercraft is Ancient Nord Greatsword, a Two-Handed weapon in the game The Elder Scrolls V: Skyrim, the paper model is created by Kuraudo3. There are also Male and Female Ancient Nord Helmet Papercraft on the site.
The Ancient Nord Greatsword can be upgraded with a Steel Ingot at a grindstone and also benefits from the Steel Smithing perk, which doubles the improvement. Upon completion of Glory of the Dead, a Nord Hero Greatsword can be crafted at the Skyforge. [Source: wikia]
You can download this papercraft model here: The Elder Scrolls V: Skyrim - Ancient Nord Greatsword Free Papercraft Download