The rarity of The Keen Commander is Rare, and been equipped it takes a “Bundle” slot. At this moment the item is available for trade.
The Keen Commander is a skin for Clockwerk. The skin was added to the game on September 21, 2017, it was created by katzeimsack.
The Keen Commander is currently one of the most popular skins, but it is rarely seen in the game due to its high price.