1836 LARGE CENT - NEWCOMB 1
Regarding Proofs, Wright noted: "Three or four one-sided Proof
examples are known from these dies, all having Proof obverse only.
The Mint Cabinet piece, now in the Smithsonian, has long claimed to be a
Proof but is not."
This was the only use of the obverse and reverse dies.
1836 Large Cent -
Images courtesy of John
Cent Book 1816-1839" by John D. Wright
Complete Encyclopedia Of U.S. And Colonial Coins" by Walter Breen
Early American Coppers Club