Help with 1967 Camaro RS Decal
 

Helping out a friend who's am original owner of a 1967 Camaro RS. His car when arrived from the factory had a shroud decal. States it was yellow and black. All the books I have researched and sites I have been to do not show any decal on a 67. This is the only pic he has of the decal, hard to ready anything on it.
Any help would be appreciated.

Paul https://www.yenko.net/ubbthreads/pics..._fan_decal.jpg