Portrait painting of Gjergj Kastriot Skanderbeg (believed to be in fair use as a scanned thumbnail from the book Historia e Popullit Shqiptar, Vol. I by Akademia e Shkencave e Shqipërisë - Instituti i Historisë, published 2000 by TOENA)
It's old enough to be in the Public Domain, so the source is irrelevant.
Moved from en.wikipedia
This file has been released into the public domain by the copyright holder, its copyright has expired, or it is ineligible for copyright. This applies worldwide.
Note: This tag is obsolete! Don't use this generic template - please use instead:
{{PD-old}} (for works out of copyright where the author has been dead for over 70 years),
{{PD-Art}} (for photos of old paintings and art out of copyright),