I restored this pictured charger in 2007 - the long time owner that I purchased that car from said the car was all original rusty - needed total restore 'for what that's worth'.
I have found discussions on here... https://www.forbbodiesonly.com/moparforum/threads/1968-charger-steering-wheels.169121/
that if car was an early 1968 build then it is possible the factory used that horn ring from 1967.

Any truth to that?

The attached picture was restored 2007 and had that horn ring.