My father came to my house this weekend. But he forgot his pipe. I went out to an antique place where I know they have misc. pipes throughout the hangar and picked one that I thought he would like. It was a older Kaywoodie Relief grain. It did need some work but the work was well within my ability to make look like new. So, I purchased it. Took it home and cleaned it up like new. Gave it to him. He was happy and I was as well. Now to my question. On the bottom is it stamped 69S. Does anyone know the relevance of the numbering systems for Kaywoodie? And/or can anyone tell me anything about this. Also, ask questions if you'd like. Thanks everyone. And happy pipe smoking.