Part I. Die Subtypes:

Design Execution Error:

1817 Large Cent with 15 stars on the Obverse

Definition: The 1817 Large Cent was punched with both 13 and 15 stars on the obverse. This was a design execution error. The die setter  inadvertently punched in 15 stars instead of 13 stars.

One variation of the 1817 Large Cent has 15 stars (image on right) instead of the normal 13 stars (image on left).