The Jefferson head cents of 1795 made by John Harper possibly to get amint contract to produce cents for the mint.
Examples are known from several dies as follows:
Sheldon NC1, Breen 1678, P5035
lettered edge with only 3 known.
Sheldon 80, Breen 1679, P5040
plain edge with many known.
Edge lettered "One hundred for a dollar" followed by a leaf which turns up P5055. Pollock lists this as unique.
Image is a scan from the Pollock book.
with only 3 known.