"F in a hexagon (shown)........Fairmount Glass Works/Company, Fairmount, IN (1889-1906) & Indianapolis, IN (c.1906-1968). Mark used from 1933 to (I presume) 1968. In 1968 Fairmount became part of Glass Containers, Inc. (see G C mark). Also see "F.G.W." and "F" mark." From.
I always think of these little guys as scented something-or-others...
I couldn't get a really good photo of it, but I tried to take a picture of the marking. Maybe you can still see it, I'm pretty sure it's a sideways-like diamond sort of like this <> but with an I right in the middle. At first I thought it might be a perfume bottle, because of the shape. But I'm not sure on that.
I dunno how I read that as an "F." Skins sounds right on the mark.
"I within a diamond (shown)...........Illinois Glass Company, Alton, IL (1873-1929). This mark was used from around 1915 to 1929. ABM (Automatic bottle machine) production was begun at Illinois Glass in 1910, and although I had presumed that the "I in a diamond" trademark was first used around that time, the U.S.Patent & Trademark Office data indicates Illinois Glass claimed use of this trademark was not begun until 1915. As far as I know, this mark is seen only on machine-made bottles which exhibit the typical Owens machine suction scars on the base. On very small bottles, the "I" may look like a dot inside the diamond, or be virtually illegible. Other plants that became part of Illinois Glass Co. during its operation include the Thompson Bottle Company of Gas City, IN (acquired 1913); Chicago Heights Glass Company, Chicago Heights, IL (1913) and Cumberland Glass Manufacturing Company, Bridgeton, NJ (1920).
Illinois-Pacific Glass Co. plants (at Los Angeles and San Francisco, CA) were organized as a wholly owned subsidiary of Illinois Glass in 1902. (See IPG and IPGCO marks.) In 1929, Illinois Glass merged with Owens Bottle Company of Toledo, Ohio to form the Owens-Illinois Glass Company. The Alton factory (in later years, Owens-Illinois plant #7) closed in 1983. See also "I.G.CO." and "IGCO within a diamond" entries." From.