Massachusetts "Oak Tree" Shillings include the following die varieties:
Noe 1 Noe 2 Noe 3 Noe 4 Noe 5 Noe 6 Noe 7 Noe 8 Noe 9 Noe 10 Noe 11 Noe 12 Noe 13 Noe 13.3 Noe 13.6 Noe 13.9 Noe 14
Sources and/or recommended reading: Noe, S. P. (1943). The silver coinage of Massachusetts. New York, NY: American Numismatic Society.