A cameo proof 1836 quarter eagle could sell for $200,000-250,000 at Stack's Bowers in New York on February 10.
The lot is one of only a handful of proof specimens of this rare issue.
 The 1836 proof quarter eagle is one of a handful of surviving specimens |
The auction house comments: "This outstanding early Proof gold rarity would serve as a highlight in the finest cabinet.
"Boldly struck on the obverse, each star is fully brought up and crisp and Liberty's hair curls are as sharp as ever seen in a quarter eagle of this type.
 The reverse shows the iconic US eagle |
"The importance of this rare Proof Classic Head quarter eagle cannot be overstated.
"With a mere seven specimens known for the date, two of which are held in museum collections, the present offering may represent a once in a lifetime bidding opportunity for advanced collectors."
Other pieces include a 1794 flowing hair silver dollar (graded VF-20) that is expected to bring $140,000-160,000.
The coin is one of a few thousand dollars struck on a half cent press, with the result that the details are softened and indistinct - although the date is clearly visible.
Another 1794 silver dollar (one of the finest known) sold for $5m last year.
Stack's Bowers is also offering coins from the D Brent Pogue collection in February, including a 1796 No Pole half cent valued at up to $1.2m.
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