Can someone tell me what this "GR" means inside my fender extensions. It does not mean Green. My car is Olympic Gold and I spoke to another RS Z/28 owner whose car was built one week later than mine and he too hat this written inside his fender extension. His car was Phantom Green though. Perhaps this like he "XO" on the inside of the fender helps tell the line worker something about the assemble of the car? If some can tell me what this means that would be great.
'69 RS Z/28 Olympic Gold, 711
Flat hood no spoiler, black top, endura, 4:10
69 X77 Z/28 69 711 Original Paint Unrestored
'69 X66 Convertible Cortez Silver 712 black top Endura, auto, bumper guards, am/fm rear speaker 44k miles