1972-S Proof Ike Dollar Mated Pair
Ike Dollar Struck on a 1¢ Planchet
mated with an
Ike Dollar Struck on a 10¢ Planchet
NGC Proof 67
AMAZING UNIQUE DISCOVERY
SOLD

This amazing unique discovery is the only known off-metal mated pair on any U.S. proof coinage that combines two different off-metals. This mated pair is unique in several ways and is visually breathtaking. A clad dime planchet and a copper cent planchet were both in the collar at the same time and were struck by both the obverse and reverse Ike Dollar proof dies. The placement of Eisenhower's head on the obverse and the eagle on the reverse is perfectly positioned.

Even in mint state, a single Ike Dollar off-metal struck on a cent or dime planchet sells for $10,000 each. In proof, of which there are only 2 or 3 known, they would each sell in the $15,000 to $20,000 range. Previously in the January 2008 FUN Heritage auction, a different mated pair of proof Ike Dollars sold for $40,250 (lot #3523). It included a proof Ike Dollar indented by a foreign planchet that was mated to that copper planchet. As spectacular as the Heritage mated pair is, it does not compare to the unique mated pair offered here which includes two different off-metals that are mated.

Proof coins are struck by technicians who hand feed the blanks into special presses. They are produced, examined and packaged using extreme quality control. It is very unusual to find major proof errors. A few broadstrikes, off-centers, double strikes (in collar) and off-metals have been known to be found in sealed proof sets. Proof errors are aggressively sought after by many error collectors.

This unique mated pair was recently authenticated and certified by NGC and is from a 40 year old U.S. proof mint error collection. This mated pair is the ultimate Eisenhower Dollar major mint error and the ultimate proof major mint error.

This Unique 3 Piece Ike Dollar "Clover Leaf" Set Sold For $105,000 In A Recent Heritage Auction

Featured on the cover of Mint Error News Magazine:

Intentional Errors One of the most controversial categories of U.S. coins are mint errors. Many dealers and collectors, as well as coin auction houses, buy, sell, trade and auction many rare, exotic and unique major mint errors. Obviously, some of these defy logic and were intentionally created and taken out of the Mint. In the early 2000's, a group of several hundred U.S. error coins were found in a safe-deposit box. Fred Weinberg purchased this group which included coins struck for proof sets and also coins struck for circulation. This group was auctioned by the California State Controller's Office of Unclaimed Property. The U.S. Secret Service inspected and released this collection to the State of California determining that it was legal to own. The State of California then auctioned the collection and the rest is history. Another example of U.S. error coins escaping the Mint occurred in the 1970's. A hoard of proof error coins were smuggled out of the San Francisco Mint inside the oil pans of forklifts that were being serviced outside of the Mint. This topic was discussed in the June 6, 2022 Issue of Coin World, which covered Fred Weinberg's account of this story. The Coin World Managing Editor concluded: Obviously, the marketplace accepts these coins, and some collectors are happy paying thousands of dollars for coins that show every indication of having been created through illegal means. In Episode 11 of the PCGS video series Slab Lab, Seth Chandler interviews Fred Weinberg. In part 2 of the interview, Fred explains in detail why mint errors that are decades old are not recovered by the U.S. Mint. Fred's recollection of conversations in his office with the Chief of the U.S. Mint Police are extremely insightful and explain why the Mint doesn't attempt to recover error coins from decades ago.

Rare Eisenhower Dollars are featured in a Mint Error News article:

Proof Errors are featured in my NLG Award winning book, World's Greatest Mint Errors.