How to tell NOS GM 69 Camaro front bumper guard?

[Jeff H]

I have a pair of front 69 Camaro bumper guards that I was told were NOS GM and the chrome sure looks like it. But is there a way to tell GM from repro front bumper guards? I want to put them up for sale but don't want to mislead anyone.

[BARRY]

:HI I THINK NOS HAVE A L FOR LEFT AND R FOR RIGHT ON THE BOTTOM WHERE THE BOLT WOULD GOTO BOLT TO VALANCE

[Jeff H]

Thanks Barry. They do have the L and R on them and I thought I had heard that somewhere before.