There are JCPenney branded lenses for which I wish to identify the manufacturer. How can I do so?
It appears to have been common for redistributors to have encoded the manufacturer in the serial or model number. If this was the case for JCPenney, as it was for others, then in principle, I just need to find a list of applicable manufacturer codes. If JCPenney was engaged in this practice, what are the manufacturer codes for lenses that were rebranded JCPenney?