The text appears to be a specific model or color code for eyewear, specifically found on Tazuna brand eyeglasses .
These frames are often described as plastic frames paired with titanium temples, marketed in wholesale optical groups. 12c.7z
According to product listings on Facebook Groups , this code is part of the identification string printed on the frame arm. For example, it is seen in the sequence , where: S255 : Likely the frame model number. 12C 7Z : The specific color or batch variation. Tazuna : The manufacturer/brand name. The text appears to be a specific model