Samoa has licensed its coinage authority extensively since the 2000s to produce collectibles with no domestic circulation intent — this Harry Potter issue is squarely in that category. The "Half Dollar" denomination is nominal at best, a legal fiction that gives the piece treaty-coin status without any pretense of monetary function.
Silver-plated copper-nickel rather than solid silver keeps production costs low enough for mass collectible runs.
Samoa has licensed its coinage authority extensively since the 2000s to produce collectibles with no domestic circulation intent — this Harry Potter issue is squarely in that category. The "Half Dollar" denomination is nominal at best, a legal fiction that gives the piece treaty-coin status without any pretense of monetary function.
Silver-plated copper-nickel rather than solid silver keeps production costs low enough for mass collectible runs.