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700 were sold, hmmm.
Well, if those were the figures...
The price of silver is so high at the moment.

@silverd510 is right(as usual). There were only 700ish rounds sold that year, but what they did was to "match" your numbers up so you could continue your collection.

If you held the number 1499 and wanted the 1499 number for 2019, then that number was engraved on to tour coin. Does that make sense?