how to find Lithium-ion battery (ICR18650S2) date code

[tmpstr]

Hi,
i recently got some Li-ion cell whith below details.
cylindrical, 2000mAH in orange heatshrink plastic and without the
protective circuitry.
line-2 and 3 are different on each cell, so they may be serial no,
manf date etc.

Make : LG Chem
line-1 : ICR18650S2
line-2 : DCC4F37210
line-3 : 4197314063

does anybody know how to decode the manufacturing date from the above
numbers ?

i could not find much info on their website (www.lgchem.com).

Thanks