Sad to say no I don't, but I would know how to make one. He and my grandmother liked Hickory King Corn variety which had huge ears. I suspect that's what we used. Now days folks like the more sweer varieties with smaller ears. I've read Missouri Meesheum uses a particular variety that they produce themselves.
Lost to time, as many things are. That's great though that you have the memories and remember how to make them. That's also fascinating about the variety of corn, I'd never thought about that going into cob pipe making but it makes total sense.