Just a bit of fun - with the Sherlock Holmes stories set between the 1880s and the 1910s and the Peterson Patent pipe running in a similar time frame (c.1890 - c.1914) it's possible that the famous detective - in this Sidney Paget painting from The Strand Magazine (September, 1914) - is smoking a Peterson ...
... similar to this one -
Peterson's Patent 2 ("K&P Peterson's Patent" on the army mount) Stamped for Dublin 1901 with a Peterson's fishtail m/piece + Peterson SHERLOCK HOLMES baccy:-