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.
PCGS also certified the famous and unique 1973-S Proof BRONZE Eisenhower Dollar from the Byers Collection.