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Riker's Septone
This was one of the products of Wlliam B. Riker of New York City. According to Devner, he was selling this preparation at least as early as 1878. I found the product listed in some 1905 ads for Jacobs Pharmacy in the Atlanta Constitution. It was a product "for destroying dandruff germs."

Ads:
  Ad from 1916 Trenton Evening News

BOTTLE DESCRIPTIONS
1 Rectangular, 8" incl. metal stopper, ring top, no panels, BIM, clear, back diagonal: "RIKER - NEW YORK"
Riker's Septone Bottle