This work is in the public domain in the United States because it meets three requirements: it was first published outside the United States (and not published in the U.S. within 30 days), it was first published before 1 March 1989 without copyright notice or before 1964 without copyright renewal or before the source country established copyright relations with the United States, it was in the public domain in its home country (Thailand) on the URAA date (1 January 1996). For background information, see the explanations on Non-U.S. copyrights. Note: This tag should not be used for sound recordings.

This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.

This image or media is now in the public domain in Thailand because its term of copyright has expired (details). According to Sections 19–23 of the Copyright Act, BE 2537 (1994) (translation), works which meet one of the following conditions are in the public domain: This is a photographic work, audiovisual recording, motion picture, sound recording, or broadcast work, and at least 50 years have elapsed since its first publication or it was not published within 50 years of authorship. This is a work of applied arts, and at least 25 years have elapsed its first publication or it was not published within 25 years of authorship. This is a work by a pseudonymous or anonymous author, and at least 50 years have elapsed since its first publication or it was not published within 50 years of authorship. This is a work other than described above, and Its last author died at least 50 years ago, or Its last author died before publication and at least 50 years have elapsed since its first publication, or The author is a legal entity, and at least 50 years have elapsed since the first publication of the work or the work was not published within 50 years of authorship. This work was created or commissioned by the Thai Government, and at least 50 years have elapsed since its first publication or it was not published within 50 years of authorship. To uploaders : Please specify the kind of work, date of first publication or creation and other useful details. You must also include a United States public domain tag to indicate why this work is in the public domain in the United States.  Note that this work might not be in the public domain in countries that do not apply the rule of the shorter term and have copyright terms longer than life of the author plus 50 years. In particular, Mexico is 100 years, Jamaica is 95 years, Colombia is 80 years, Guatemala and Samoa are 75 years, Switzerland and the United States are 70 years, and Venezuela is 60 years.

This tag is designed for use where there may be a need to assert that any enhancements (eg brightness, contrast, colour-matching, sharpening) are in themselves insufficiently creative to generate a new copyright. It can be used where it is unknown whether any enhancements have been made, as well as when the enhancements are clear but insufficient. For known raw unenhanced scans you can use an appropriate {{PD-old}} tag instead. For usage, see Commons:When to use the PD-scan tag.