The rarity of Old Helmet of the Bogatyr is Uncommon. At this moment the item is available for trade.
Old Helmet of the Bogatyr is a skin for Pudge. The skin was added to the game on June 30, 2015, it was created by MYSTIC SNAKE.
Old Helmet of the Bogatyr has been recently added to the game, which makes it rather popular with the game community.