Basil Rathbone was for sure. His favorite blend made for him was : Wilke #515, not Black Shag. It is still available from Carole Burns @ http://www.vtpipes.com.
WILKE No. 515
This is the blend smoked by Basil Rathbone, Wilke's famous No. 515. A blend of ribbon cut Virginias and toasted Black Cavendish, or as the Wilke sisters described it: " exotic tobaccos aged in a rare Jamaica Rum - smooth, mild with a delightful aroma".