This papercraft is the Iron Man Mark 43 (Mark XLIII) Bust, created by Rafa Cunha. The size of finished model is about 400 (H) x 608 (W) x 567 (D) mm. There is also a chibi Iron Man Mark 43 paper model on the site.
The Mark 43 (Mark XLIII) is the forty-third Iron Man Armor created byTony Stark and is the perfected version of, as well as the ultimate successor, to the Mark 42. The armor was created sometime before Age of Ultron, and has been used by Tony in various battles and missions.
You can download the papercraft model here: Iron Man Mark 43 (Mark XLIII) Bust Free Papercraft Download