I have an old Marlin 30-30 lever that I need help with. It has a short mag tube, marked Model 93 with initials JM on top tang, and a ser# of 1xxx. What I have learned from other sites is a bit confusing. One site said that the ser# indicates it was made prior to 1883, but another said Model 93 wasn't used until 1894. This is a hand me down used by my grandfather, father and I. Thanks for any help.