<https://covers.frenkel-online.com/product/russia-1989-to-the-250th-anniversary-of-the-great-northern-expedition-1733-1743-d-l-ovtsyn-cover-with-original-stamp-3/>
<http://schema.org/name>
"Russia. 1989. To the 250th anniversary of the Great Northern Expedition (1733-1743). D.L. Ovtsyn  Cover with Original Stamp"
<https://covers.frenkel-online.com/product/russia-1989-to-the-250th-anniversary-of-the-great-northern-expedition-1733-1743-d-l-ovtsyn-cover-with-original-stamp-3/>