The bottle could be considered a transitional bottle that dates from 1861 to about 1870. It was blown in a three-piece mold and most definitely held liquor as labeled examples have been observed noting that they contained "Old Bourbon Whiskey."
Tall, moderately slender bodied, straight neck early "Patent" style spirits cylinders (mid-19th century): During the 1850s the bulged neck, cylinder bottle noted above "evolved" closer to a general shape that continues in popularity to this day (though with different finishes and manufacturing methods of course).
This bottle is an example of a larger (8.5" tall and 3.4" at its widest) union oval type flask with rounded sides, i.e., totally oval in cross section. It was possibly blown at one of the early San Francisco, CA. glass works though could have been blown on the Eastern Seaboard (possibly in Stoddard, NH.), has an applied double ring finish, post-bottom mold produced, lacks any evidence of mold air venting, and dates from between about 1867 and 1872.
This bottle was blown in a dip mold which is indicated by the textured surface to the bottle body below the shoulder and the smooth glossy glass surface at the shoulder and neck (click photo to enlarge). It has a crudely applied mineral finish (with a bit taller upper portion as compared to the earlier bottles above), a faint sand pontil scar on the base, and likely dates from the 1850s.
The agriculture/commerce related flask has a large ear of corn embossed and the embossed lettering CORN FOR THE WORLD. The reverse side has the Baltimore Monument embossed with the word "Baltimore." This quart size flask classifies as GVI-4, has a smooth (non-pontiled) base, applied double ring finish, and was blown in a two-piece hinge mold by the Baltimore Glass Works, Baltimore, MD. This particular flask likely dates from the 1860s.