This is a restrike made in the 1870s deliberately for sale to a collector. It employs the regular 1839 capped bust obverse combined with the flying eagle reverse used on pattern 1838 and 1839 dated coins. Both dies show heavy die rust.
Only 2 are known as follows;
1) Woodin, Newcomer, Boyd, Judd, Krouner-Coronet Coin, FPL, Merkin 2/71, Bass Foundation
2) MHS-Stacks 76 ANA, Witham, Auction 81, Lemus-Queller-Heritage 1/09 as NGC63, Simpson-Heritage 8/21 - PCGS63, illustrated above.
Photo courtesy of Heritage.