Wrong Mintage number (honest mistake?)

Link attached shows a very nice coin but the seller misinformed the public by providing incorrect information.
He stated "only 7,261 coins made" but in reality this proof coin has a mintage of more than 20,000.
2000 Lib of Congress Auction
He stated "only 7,261 coins made" but in reality this proof coin has a mintage of more than 20,000.
2000 Lib of Congress Auction
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TD
Edit to add: I sent him a note with correct mintage of 27,167.
WH