Beer Date Codes

Canadian beer is my Molsen expired?
The code at the bottom reads G31993 and I can not find anything that seems like an expiration date. : – / Please, how stupid I can decipher these codes? so I do not know it or be defeated, so I guess it's good. was kept in my basement … dark dark cellar for many months. I know its not too old Vancouver 2010 has logos everywhere
Just open and test a little. If you still is bubbling then you should be fine.
NI Vision System Test: CIJ Date Code Print Quality on Beer Crown – Bad Print Sample