Stamp of Hanover, 2 Silbergroschen, issue 1856-57 with large underground meshes. Blue cancellation.
<a href="//commons.wikimedia.org/wiki/User:Jacquesverlaeken" title="User:Jacquesverlaeken">Jacquesverlaeken</a>
2013-10-18 16:53:52
<span class="int-own-work" lang="en">Own work</span>