Trade card in addressed envelope. Envelope is blue with sealing wax on back.
between 1837 and 1870 <div style="display: none;">date QS:P571,+1850-00-00T00:00:00Z/7,P1319,+1837-00-00T00:00:00Z/9,P1326,+1870-00-00T00:00:00Z/9</div>
<a rel="nofollow" class="external free" href="https://www.britishmuseum.org/collection/object/H_1958-1006-2694">https://www.britishmuseum.org/collection/object/H_1958-1006-2694</a>