It was his main one. He also occasionally smoked a cherry aro, which is what is left in the bowl. I cannot figure out which though it has to be an OTC brand.
Going back to my first dabbles into pipes and cherry aros around that time frame, I can only recall really seeing 2 main ones on the shelf. Borkum Riff had a cherry blend, and Paladin Black Cherry was the other. I can't remember if the Capt. Black Cherry goes back that far or not...