What kinds of money did the vikings use?
Silver and gold, as well as cattle. They didn't usually have
coins, a regular person would instead have an arm ring made of
coiled silver with knotches marking out weight. So if something was
two units of silver, he would take off his armring, and use his
steel Seax knife or Scramasax to cut out the two pieces of silver.
Then the arm ring went back on the arm.