Two rats stand together at the bottom of the kozuka. One has its back to the viewer. Another stands on his hind legs. Rats are associated with the god of good fortune Daitoku as a reminder that treasure needs to be guarded against pest such as rats.
<bdi><a href="https://www.wikidata.org/wiki/Q37449225" class="extiw" title="d:Q37449225"><span title="Japanese swordsmith (1763-1836)">Hamano Yasuyuki</span></a>
</bdi>
between 1763 and 1836 <div style="display: none;">date QS:P571,+1500-00-00T00:00:00Z/6,P1319,+1763-00-00T00:00:00Z/9,P1326,+1836-00-00T00:00:00Z/9</div> (late Edo)
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