Exclusive Mastery

Most Mastery rewarding items or their blueprints can be directly farmed, bought or researched. These are the exceptions.

Founder Exclusive
Aquisition: Impossible.

These items were given to those who donated to the earliest stages of the game. As rewards for their help at that crucial time, these items can never after be obtained.

Market Retired
Aquisition: None currently, with excpetions.

The Gorgon is still available as a random Login Reward. The Boar can be obtained for an exorbitant 545 in the Wrecking Rhino Pack bundle.

Event Reward
Aquisition: None currently.

Prime Vault
Aquisition: Blueprints still tradeable from players.

These items were removed from the Void drop tables to make room for newer Prime items. For now the blueprints can only be obtained from other players who acquired them previously. DE has implied they will eventually return.

Void Trader
Aquisition: Directly tradeable from players if Unranked.

These are part of Baro Ki'Teer's merchandise. They will occasionally return to the Void Trader's stock on future visits.