The sale of these on
ebay is just the tip of the iceberg if coins are being produced that say, on the coins, "1 oz 999 Fine Silver" (followed by a Disney copyright) as shown in auction scans while they are actually clad coins. The real problem is not the
ebay sales, but is the manufacture of the items. So I contacted Disney.
Good old Wikipedia tells us, "Niue is notorious among coin collectors for their frequent flooding of commemorative coins." They have a special currency set up for this, legal tender on the island but unlikely to be found there, while their business is done using New Zealand coinage.
-Dunc