I don't know about that tin. Some manufacturers though use the code as a date like; month, Day, Year, Hour. Look into if that company did that. If not you'll need an old timer who can roughly date it through tin art and stuff.
Somewhere on this forum there is a thread about how to date Esoterica. I know it pertains to the bags, but I dno't know if it pertains to the tins. You can also try YouTube. There are several videos about dating blends by different manufacturers.