Stack's/Bowers 3/2012:4054, $18,400
Ron Guth: Breen (1989) listed Proof examples of two different 1831 Half Dime varieties: LM-3 and LM-5.
Logan and McCloskey (1998) list no Proof citations under any of the individual die variety write-ups and discount trhe Eliasberg:921 Proof as a business strike.
PCGS has not certified any Proofs of this date. The 1832 Half Dime is either extremely rare as a Proof or may not even exist as a true Proof.
Sources and/or recommended reading:
"Walter Breen's Encyclopedia of United States and Colonial Proof Coins 1722-1989, New Revised and Corrected Edition" by Walter Breen (1989).
"Federal Half Dimes 1792-1837" by Russell J. Logan and John W. McCloskey (1998)
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