Armenia 1920, large sized framed HP monogram overprint. This overprint type was introduced at Erivan (now <a href="https://en.wikipedia.org/wiki/Yerevan" class="extiw" title="w:Yerevan">Yerevan</a>) in January 1920 in violet, and probably from February 1920 in black.<sup id="cite_ref-1" class="reference"><a href="#cite_note-1">[1]</a></sup> The stamp was <a href="https://en.wikipedia.org/wiki/Cancelled-to-order" class="extiw" title="w:Cancelled-to-order">cancelled-to-order</a> with 'ERIVAN D -5 2.20'.
Government of Armenia
Scan of original