2 Dollars - Charles III Thor Ragnarok

Niue has operated as a licensing hub for themed bullion since the 1990s, granting its name and nominal face value to privately designed collector pieces through agreements with foreign mints and IP holders. This piece is among dozens issued annually under that arrangement — the $2 denomination carries no transactional function and is set purely to satisfy legal tender formality under Niuean law.

Marvel's Thor: Ragnarok was released in 2017, making this a retrospective licensing issue rather than a contemporary tie-in.