In the 1st edition (1859) of his American Numismatical Manual, Dr. Montroville Dickeson enumerated 31 varieties of 1793 cents. In J. N. T. Levick's notebook that I found at the American Numismatic Society he comments on this: "No one person has ever possessed so many varieties of the 93s as Dr. D. mentions & how in creation he ever conjured up so many is a mystery to me."

However he did get one right. In describing a 1793 Liberty Cap variety he writes: "In one of the varieties there must have been a flaw in the die, which disfigured the effigy with a raised line through it lengthwise." This is the first published description of the S14 variety.

I've attached a pix of Dr. D next to a young Charlie Davis.