This half pint size was probably used as a testing bottle in the Mojonnier processing/testing company.  It has raised lettering for the company and patent NO. 57479.  There is an circular etched spot on the side to write information on the bottle.  A faint 16 appears.  Bottom is stamped 9, 5, 5, and a symbol. Glass is clear and free of chips or cracks.  Measures 6" tall x 2.25" diam bottom x 1.75" diam top. Mojonnier Bros. Co.  was founded in Chicago 1919 by dairy chemists.