User blog comment:The Milkman/Phantasy Philosophy: Elder Scrolls/@comment-3025184-20120913195304/@comment-1080767-20120914044712

If the next installment comes well after the events of Skyrim, one of the two empires - the Imperial or Aldmeri Dominion ones - would have taken military control of Tamriel. There's certainly a lot of incentive to keep fighting for both sides. In this case, Hammerfell would fall into the hands of some larger entity or come to an alliance, and so there'd be some form of practical currency, surely.