S (on the base of bottles) ………………….In some cases this mark was used by Lyndeboro Glass Company, South Lyndeborough, New Hampshire (1866-1888). The “S” is seen on the bottom of some hand-blown ‘strapside’ liquor flasks (usually in amber or blue-aqua) and certain other bottles which are found in the eastern states. (Thanks to Mark Newton for this info). If the “S’ is on a clear bottle, or on a machine-made bottle, that would indicate another maker. Note: as with the great majority of cases involving soda bottles of the late 19th and early twentieth century, if the bottle base has just a large letter, such as S (or any letter, or initials comprised of 2 or more letters) and this corresponds to the initials of the bottling company name embossed on the side, that would serve as a self-explanatory meaning, and nearly always is not indicating the glass manufacturer. Many such bottles with an initial on the base were purposely made with no glass manufacturer identification.
Also found this. You may be spot on with your guess. I found this next bit the girst time i researched and based my initial guess on streator because of the date ranges. I think it is lyndeboro
Date Range
Section*
Southern Glass Co.
ca. 1924-1926
S:Southern Glass Co.
poss. Streator Bottle & Glass Co.
1881-1905
S:Streator Bottle & Glass Co.
poss. Hero Glass Works
ca. 1880s
S:Other S
unknown
unknown
S:Other S
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