There are lots of Islamic gold & silver coins found in Viking hoards: http://www.thenational.ae/news/world/middle-east/b-focus-b-vikings-came-in-search-of-dirha

There are lots of Islamic gold & silver coins found in Viking hoards: http://www.thenational.ae/news/world/middle-east/b-focus-b-vikings-came-in-search-of-dirhams#full http://www.thenational.ae/news/world/middle-east/b-focus-b-v...