This work is now in the public domain in Iran, because according——to the Law for the "Protection of Authors," Composers and Artists Rights (1970) its term of copyright has expired for one of the following reasons:

• The creator(s) died before 22 August 1980, "for works that their copyright expired before 22 August 2010 according to the 1970 law."
• The creator(s) died more than 50 years ago. (Reformation of article 12 - 22 August 2010)

In the following cases works fall into the public domain after 30 years from the date of publication. Or public presentation (Article 16):

• Photographic/cinematographic works.
• In cases where the work belongs to a legal person or rights are transferred to a legal person.

The media description page should identify which reason applies.

For more information please see: Commons:Copyright rules by territory/Iran.