Mint Errors Page



A brockage error can only occur when there are two coins involved. One of the coins involved will always be a struck coin which has not ejected properly. That struck coin will find its way back between the dies and will be struck next to a blank planchet which was fed into the collar. The image of that first struck coin will be impressed into that side of the blank planchet. The result will be a second coin which has images of the first coin impressed into it. Those images will be pressed into the coin and the image will be in reverse. This incuse sunken image is known as a brockage.

Images courtesy of Byers Numismatic Corp.

Significant examples:
New Jersey States Quarter Cap Obverse Die/Full Incuse-Brockage Reverse (illustrated above)

Recent sales:
1829 Half Cent Brockage (illustrated below). 
Superior Galleries' "Pre-Long Beach" Sale, June 5-7, 2000, Lot 97, where it was described as follows: "1829 C-1 R1 VG7 Obverse Brockage 10% Off Center Recolored glossy olive and steel brown with some underlying tan from the cleaning. The only mark is a small rim bruise over star 8. The brockage impression on the "reverse" is perfectly aligned with the obverse, about 10% off center to K-4. An impressive mint error and extremely rare on a half cent."

Sources and/or recommended reading:

Obverse of 1829 Half Cent Brockage     Reverse of 1829 Half Cent Brockage

Images courtesy of Superior Galleries