![H HELMUT JUST Rectangular Sunglasses Men Sunglasses Polarized Metal Frame Mirror Anti-reflective Lenses Driving UV400 Protection : Amazon.co.uk: Fashion H HELMUT JUST Rectangular Sunglasses Men Sunglasses Polarized Metal Frame Mirror Anti-reflective Lenses Driving UV400 Protection : Amazon.co.uk: Fashion](https://m.media-amazon.com/images/I/51juUdqN20L._AC_UY1000_.jpg)
H HELMUT JUST Rectangular Sunglasses Men Sunglasses Polarized Metal Frame Mirror Anti-reflective Lenses Driving UV400 Protection : Amazon.co.uk: Fashion
![Any idea what these weird numbers and letters on prescription sunglasses lenses. Just bought these prescription sunglasses and they have these 2 alphanumeric on each of the lenses (circled). Are these normal, Any idea what these weird numbers and letters on prescription sunglasses lenses. Just bought these prescription sunglasses and they have these 2 alphanumeric on each of the lenses (circled). Are these normal,](https://i.redd.it/axfs9he3p2c51.jpg)
Any idea what these weird numbers and letters on prescription sunglasses lenses. Just bought these prescription sunglasses and they have these 2 alphanumeric on each of the lenses (circled). Are these normal,
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