Glass cup with purple rim, half ot the 10th century, founded at Birka ( Sweden ). Now in the collections of the Statens historiska museum, in Stockholm. Picture made during the temporary exhibition "Le Verre, un Moyen Âge inventif" in the Musée national du Moyen Âge ( Musée de Cluny ) in Paris.
<a href="//commons.wikimedia.org/wiki/User:Vassil" title="User:Vassil">Vassil</a>
<span class="int-own-work" lang="en">Own work</span>