This is a nice example of a Dr. C. W. Robacks Stomach Bitters Cincinnati. O. bottle in the amber color variation (most often encountered). The bottle stands 9 1/2 inches tall and is referred to as a barrel bitters and was manufactured in Cincinnati, Ohio. Has 2 Chips on the top from the clasp. This is a nice clean bitters with the only defects that are mentioned, and would be an awesome addition to any bottle collection. These bottles date from the 1860s to mid 1870s.