This papercraft is Masque of Clavicus Vile helmet, one of the Daedric Artifacts and a unique mask found in the game The Elder Scrolls V: Skyrim, the paper model is created by Kuraudo3. There is another version on the site: Masque of Clavicus Vile Helmet Papercraft Ver.1.
It is a potential reward from the Daedric Quest "A Daedra's Best Friend". The quest is completed by returning the Rueful Axe to the shrine of Clavicus Vile and not killing Barbas. Killing Barbas will instead give the Rueful Axe; however, the Rueful Axe does not count towards the achievement/trophy Oblivion Walker, while the Masque does. [Source: wikia]
You can download this papercraft model here: The Elder Scrolls V: Skyrim - Masque of Clavicus Vile Helmet Ver.2 Free Papercraft Download