This hand colored map is a steel plate engraving, dating to 1815 by the important English mapmaker John Thomson.  It is a representation of the Prussia, Germany, including the districts of Pomerania, Brandemburg, Prussia and Silesia.
<bdi><a href="https://en.wikipedia.org/wiki/en:John_Thomson_(cartographer)" class="extiw" title="w:en:John Thomson (cartographer)"><span title="Scottish cartographer">John Thomson</span></a>
</bdi>
1815 (dated)
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