Interesting that it's not that readily available. A lot of what might seem like standard information about tobacco pipes and blenders isn't easy to find. The manufacturers sometimes use the retailers as a shield, and the retailers seem to protect the manufacturers and wholesale sources as well. I wonder if this is a holdover from the old days when pipes and tobacco were ultra competitive and people were patenting every little modification to pipes or processes in blending tobacco, if they could. The fact that stamping of pipes has never been that standardized, and that the pipe community spends a lot of energy hunting down information on the provenance, identity, and history of pipes further illustrates the point. So, this is not much help on getting the email for Stanwell, but I wish you good luck. Someone at pipesandcigars must know this since they seem to negotiate outstanding prices.