This file is in the public domain in Finland because it is a part of a decision or a statement issued by a public authority or other public body in Finland and is not an independent work. Section 9 of the Finnish Copyright Act specifies that no copyright exists in such material. (Link to the Act)
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 Finland.
Note that this tag cannot be used on all signatures, as not all signatures are copyright-free.