This Type 3 $1 Gold brockage is unique for the type, and only 1 of 2 known in the entire $1 gold piece series from 1849 through 1889. The other known piece is a Type 2 $1 Gold brockage and was authenticated and certified AU 55 by PCGS. It is a first strike obverse brockage of the reverse. It is in choice mint state condition with proof-like surfaces.
This spectacular coin is from my personal collection and has been authenticated and certified by NGC and BYERS COLLECTION is noted on the insert.
NGC began certifying a few major mint errors from Mike Byers' personal collection. These spectacular and rare coins each have "BYERS COLLECTION" designated on the NGC insert.
1874 G$1 Mirror
Brockage on Obverse
NGC MS 62
(1928) 25¢ Struck on a
1¢ Planchet 3.02 Grams
NGC MS 63 BN