Need some help deciphering wheels codes

[1970ChevelleSS]

I found used wheels for sale that were advertised as being for a 70 chevelle. These are the codes the seller gave me.
CODES 12-11-LZ JJ THANKS

[Rixls6]

The code "LZ" is for the Olds Cutlas/442. Very much like the Chevelle SS wheel in 69-70, but has a factory chrome finish on spokes.

Rick