This is a unique pair of Barber Dime Die Caps. They are both from the New Orleans Mint which produced very few Mint Errors. The Barber Dime obverse cap is one of 5 known for the series. The Barber Dime reverse cap is the only known reverse cap for the series, making this the only known set.
The Barber Dime obverse cap is an extremely deep die cap and barely fits in the PCGS holder. The reverse of this cap is a distorted impression of what was the raised design of the reverse. This cap formed incuse brockages on the obverse of many Barber Dimes that were being struck.
The Barber Dime reverse cap is also extremely deep and has a brockage. The obverse of this cap shows an incuse brockage design of the reverse of a struck Barber Dime cap. The obverse of this cap created counterbrockages on the reverse of Barber Dimes that were struck. A counterbrockage is a brockage from a brockage and is a very rare Mint Error.
It is exciting to have a unique set of both Barber Dime obverse and reverse caps. In addition, they are from the New Orleans Mint and have somehow survived over a hundred years. Truly the centerpiece of a Mint Error Collection.