I'll bet no doctor or pharmacist today receives any drug company advertising like this! I have no idea how old this thing is. It's 7.25 by 6 inches and in very good shape. John Wyeth & Brother, Incorporated was formed in 1899 and lasted over a hundred years before being gobbled up by Pfizer.
I I like the offset disc and the offset text. However, there isn't really any reason other than novelty for this information to be presented in wheel form. The numerals on the dial make reference to a table on the back. But you get the identical information when you dial the number on the front.
I know Pablo/El Lobo will appreciate the pun in the elixir's name: vitamin B1 or Bewon!