“Clover leaf” Error By Mike Byers for Mint Error News ……
This remarkable “clover leaf” mint error features a Proof Eisenhower Dollar mated planchet set. The error formed when three planchets of different denominations entered the striking chamber at the same time. The set includes two copper-alloy cent planchets and one copper-nickel nickel planchet struck together during a single Proof strike.
How the Clover Leaf Error Occurred
Eisenhower Dollars require a large, dollar-sized planchet that fits securely inside the striking collar. In this case, three smaller planchets replaced the correct dollar planchet. Because cent and nickel planchets measure far smaller than a dollar planchet, they could not seat properly within the collar. Instead, the planchets overlapped inside the collar before the dies struck the 3 planchets.
Evidence of a Single Strike Event
When the Proof dies struck, each planchet pressed into the others. This action created clear indentations and matching contours along their edges. Each piece physically mates with the other two. These interlocking impressions confirm that all three planchets struck together in one event.
Multiple Denominations and Metal Compositions
This clover leaf error stands out because it combines different denominations and metals. Cent planchets consist primarily of copper, while nickel planchets contain a copper-nickel alloy. Errors that involve multiple compositions in one strike remain extremely rare, especially in Proof coinage.
Significance of Proof Mint Errors
Proof coins undergo higher quality control than circulation strikes. As a result, Proof mint errors appear far less often. Complex multi-planchet errors rank among the most desirable U.S. mint errors. This Eisenhower Dollar clover leaf error represents an exceptional and highly unusual example within modern Proof coinage.
The first known Proof Ike Dollar “Clover Leaf” struck on three dime planchets sold in a Heritage Auction for $105,000.
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