The numbers just don't add up.

The cumulative totals of Proof 1964-2014-W Kennedy 50th Anniversary gold half dollars reportedgraded and encapsulated by Professional Coin Grading Service, Numismatic Guaranty Corp. and ANACSduring Aug. 5 to 7 sales at the American Numismatic Association World's Fair of Money in Rosemont,Ill., exceed the number of coins offered and reported sold by the U.S. Mint by 613 coins.

The ANA-show grading numbers, 1,136 coins for NGC, 947 coins for PCGS and 30 gold half dollarsfor ANACS, total 2,113 - 613 coins more than the 1,500 coins the U.S. Mint offered and sold at theshow.

The discrepancy is apparently the result of coins being submitted at the ANA show forcertification that likely had actually been purchased at one of the three other sales outletsoffering the coins and then forwarded to the Rosemont location for grading and encapsulation.Grading services certifying coins sold at the ANA convention operated under different policies,with two requiring sales receipts showing that the coins had been sold at the show, and one firmnot requiring the receipts.

The numbers discrepancies were first reported online in an Aug. 22 article by Charles Morgan onCoinWeek.com.

To read the complete Coin World article, see:
Salesversus certified: numbers for Proof gold Kennedy 50th Anniversary half dollars don't match(www.coinworld.com/insights/kennedy-gold-proof-half-certification-sales-mismatch.all.html)

To read the earlier CoinWeek article, see:
The Kennedy Gold Proof Launch and the Modern Coin Market(www.coinweek.com/coin-clubs/american-numismatic-association/kennedy-gold-proof-modern-market-numbers-add/)