definitive stamp series of Gdansk with overprints
<p>scanned by <a href="//commons.wikimedia.org/wiki/User:NobbiP" title="User:NobbiP">NobbiP</a>
</p>
Max Buchholz (1878–1942)
scanned by <a href="//commons.wikimedia.org/wiki/User:NobbiP" title="User:NobbiP">NobbiP</a>