English: Coat of arms of Salta Province, Argentina.
(Promulgated by Law 2.027) 
|Source||SVG based on this image|
(Vector graphics image by Gorivero)
This work is in the public domain in the Official Bulletin.
Likewise, according to the Law 22,362, article 3, section f: "Letters, words, names, emblems and symbols used by the National Government, as well as the Provinces, Municipalities, Religious and Health Organizations", cannot be subject of copyright.
The National symbols of Argentina are regulated by Decree Nº 10.302/1944.
As an image regulated by an edict of a government, it is also in the public domain in the United States.