Editor's Note: A reader of Mint Error News who collects rare proof U.S. mint errors wanted to share two special Kennedy Half mint errors from his collection.(1972-S) Kennedy Half Proof Die Break
NGC PF 68 ULTRA CAMEO
Die breaks (cuds) on proof U.S. coins are extremely rare. Usually small cuds are discovered on Lincoln Cents or Jefferson Nickels. There are a only few known proof Kennedy Halves with cuds, this one being one of the largest. Also authenticated and encapsulated by NGC along with the Kennedy Half obverse cud is the actual broken piece of the obverse die. After braking off from the die it adhered to the coin.
The original discovery coin with a cud and also a small piece of the broken die is a 1974-S Lincoln Cent that was struck from circulation dies. It has a small piece of the broken obverse die embedded into the reverse. It sold in a Heritage auction for $9,000. As fascinating and intriguing as this Lincoln Cent error is, it does not begin to compare to this Kennedy Half, since it is proof with an obverse cud and includes a large piece of broken die that was discovered with the coin. It is truly an unheard of mint error and definitely belongs in a category by itself.
1972-S Kennedy Half Bonded With Elliptical 50C Planchet
NGC PF 63 CAMEO
Bonded mint errors are very scarce when discovered struck by mint state dies and extremely rare when struck by proof dies. This Kennedy Half planchet entered the collar along with an elliptical shaped Half Dollar planchet that partially overlapped the full size planchet. They were struck together creating a bonded mint error. Part of the elliptical planchet was not seated in the collar nor struck by the obverse die, creating such a high rim that it had to be encapsulated in an extra thick NGC holder.
In 1975 I issued my first major mint error catalog. In it were the world-famous 1851 $20 gold piece struck on a Large Cent planchet and a 1900 Indian Head Cent struck in Gold. Also in my catalog was a unique and extremely dramatic 1972-S proof Kennedy Half matched set. Two planchets entered the collar at the same time, one on top of the other and when they were struck an elliptical clip was created. It is a very similar error even though it is mated, not bonded, and it is incredible that both of these exist.
|From 1974 - 1978 I mailed out over 25 price lists of major mint errors. My all time favorite was my first catalog which was photographed, printed and distributed in 1975 by John Devine (Lonesome John) from Newbury Park, CA. It was a 26 page catalog containing the finest major mint errors with photographs, descriptions and prices.|