Chloe Date Codes

I searched but couldn't find definitive info on what the date code/serial numbers actually mean? Does anyone know?
the only thing consistent about Chloe date tags is that they're always inconsistent. The codes I havent cracked completely as I came late to authenticating and have bulit my own library, so I always have to see the entire bag, Just remember to get it authenticated if you need to, the tags are not SN, always date codes (with season and factory locations)

 
the only thing consistent about Chloe date tags is that they're always inconsistent. The codes I havent cracked completely as I came late to authenticating and have bulit my own library, so I always have to see the entire bag, Just remember to get it authenticated if you need to, the tags are not SN, always date codes (with season and factory locations)

Thank you!!