Hi Chuck - Thanks for the comments. I have had these type of wheels in the past, and have seen the date stamped where you indicated on those wheels. I also had an undated wheel in the past as well. These current wheels do not have the date there. I even bead-blasted in that area to remove all the paint.
I just looked back through some old emails and you told me the same thing last year about never having seen an undated wheel when I had one for sale back then