...Fact or fiction?

In two different parts catalogs, I have seen rocket emblems sold for this application. The catalog stated they are for 1970-1972 442s only.
See picture below.

I have never seen them on a real 1972 442 (W29) or in the manuals.
What were they available on? Perhaps only on '70 or '71 models?
A different option package in '72 (like W30)??

 

I think those are for "S" trim level cars. We had a 70 "S" coupe that had them.