Estimated grade. Ex. Menjou Sale Sold by David Akers Numsimatics, May '98.
The 1845 Half Dime is extremely rare, with fewer than ten examples known. Eric Newman's example came from a complete, cased 1845 Proof set formerly owned by Col. E.H.R. Green. John Jay Pittman purchased his in the the 1950 "Adolphe Menjou" sale and used it to rebuild an 1845 Proof set (including the gold). Louis Eliasberg and Eugene Gardner both owned Gem examples. Others exist, but they rarely appear on the market.
The best Proof 1845 Half Dime is an NGC PR68 -- that coin realized a record $92,000 in 2008, but sold for almost a third less when it reappeared in 2014.
Numismatic Gallery “Adolphe Menjou Collection” 6/1950:113, $24 - John Jay Pittman Collection - David Akers 5/1998:1711c, offered as part of a complete, cased 10-piece set that realized $746,250 - Phil Kaufman Collection of Early Seated Proof Sets, Part Two - Heritage 1/2008:3028, $92,000 - Greensboro Collection, Part V - Heritage 1/2014:5185, $64,625
Phil Kaufman Collection - Bowers & Merena 1/1999:1065, $23,000 - Eugene H. Gardner Collection - Heritage 5/2015:98191, $25,850