specifically a First Day of Issue Centennial cover for Washington Territory organized in March 1853.

 The stamp features a multi-color design and depicts the territory's seal.

 The cover is used and ungraded, but still in good condition.

 The cancellation type is First Day of Issue, and the stamp is uncertified. 

This item is a great addition to any stamp collection, especially for those interested in Washington Territory history.

 It is a vintage piece with a unique story to tell.