2007. Basically take the first 2 digits, subtract from 100 and that's the year of manufacture. Examples; 20xxxxxx is 1980, 05xxxxxx would be 1995, your 93xxxxx is 2007.I purchased a Marlin 1894 Cowboy 44 mag. and been trying to determine its date of manufacture. SN: 93228xxx. Any suggestions as where to look?