A USSR stamp,
Scanned and processed by <a href="//commons.wikimedia.org/wiki/User:Mariluna" title="User:Mariluna">Mariluna</a>
15 September 2007 (original upload date)
Personal collection <a rel="nofollow" class="external free" href="http://webmarki.com/pochtovya-marka-sssr/%D0%A0%D1%9Covruz-Azerbajdzhan--mc41718289">http://webmarki.com/pochtovya-marka-sssr/%D0%A0%D1%9Covruz-Azerbajdzhan--mc41718289</a>