Own work (photo of signature published in a book - KOTTNAUER Čeněk: Album členů Národního divadla v Praze, nedat. (před r.1931), vyd. V.J. Procházka, Praha)
This signature is believed to be ineligible for copyright and therefore in the public domain because it falls below the required level of originality for copyright protection both in the United States and in the source country (if different). In this case, the source country (e.g. the country of nationality of the signatory) is believed to be Czech Republic.
Note that this tag cannot be used on all signatures, as not all signatures are copyright-free.
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible license as the original.