a guide to a closed currencyA closed currency is a currency that is not freely available outside its country of origin. Check this guide to a closed currency to avoid costly issues. Leave a Comment Cancel ReplySave my name, email, and website in this browser for the next time I comment. Sign me up for the newsletter!* By using this form you agree with the storage and handling of your data by this website. This site uses Akismet to reduce spam. Learn how your comment data is processed.