According to the 1971 Challenger illustrated facts and features manual there were two steering wheels available.
The Black poly-propylene in textured coachman grain, three spokes with padded horn button was standard on the Challenger Coupe.
The 3 spoke, simulated wood grain, with padded horn button was standrad on the Challenger and Challenger R/T.
One interesting thing that I have noticed in the Challenger sales brochure is a picture of the steering wheel with a rallye dash that is definitley from a Cuda as the horn button has a fish on it. Oops do you think a little mix up in the advertising department.