Possibly the terminal die state of this variety with the reverse cracked as described by Overton for O-106a. The second crack from rim to bottom of C in AMERICA continues to the top of final A and the border.
The Crushed Lettered Edge coins of 1833 through 1835 (and perhaps 1836 if one exists) all share the same reverse die as this 1836 variety. With the extensive die cracks on this die state, we wonder how it would have been possible for the CLE's to be struck at any later date than 1836. Those coins are clearly from an earlier reverse die state without any evidence of these die cracks, thus must have been struck before this example. Leaman and Gunnet illustrated that the O-106 die marriage was the fourth varriety struck for the year, based on their study of edge dies. Die state evidence specifically suggests the the CLE coinage could not have been struck any later than 1836, and possibly early in the year.
Is it possible that the CLE's were struck early in 1836, utilizing any extra dies available to the Mint workmen during their preliminary trials with the new steam press? Lettered edge planchets would have been available. Perhaps this reverse die was just engraved and ready for use, but without any 1836 dated obverse dies available that were not already in the screw press for regular issue coinage. This is simply speculation but somehow it seems to make sense.
From Coin Galleries' sale of June 1989, Lot 1405.