Define first base dating
It is an almost absolute fact that if an American made liquor bottle is mouth-blown it pre-dates National Prohibition.It is largely true, though not nearly absolute, that if a liquor bottle is machine-made it dates from or after Prohibition."FEDERAL LAW FORBIDS SALE OR RE-USE OF THIS BOTTLE" inscription on the shoulder of a machine-made pint liquor flask manufactured in 1956 by the Owens-Illinois Glass Company. Though not quite on a par with the anti-slavery movement of the 19th century, temperance was a very significant morally based social movement in the U. and had its roots in the still pervasive damage done to some individuals and their families by the improper use of alcohol.This embossing was required on all liquor bottles sold in the U. To quote an important work on the subject: "For many observers of American Life the Temperance movement is evidence for an excessive moral perfectionism and an overly legalistic bent to American culture." This is a pervasive thread that still exists in current American politics and culture in aspects of human behavior well beyond just alcohol (Gusfield 1970).
Federal Acquisition Regulation (FAR) Part 42 identifies requirements for documenting contractor performance evaluations for systems, non-systems, architect-engineer, and construction acquisitions.
Bottles known to date as late as 1974 still had that inscription on them; click 1970s liquor bottle to see an example which is also covered later on this page.: Canada followed a similar trend as the U. in the gradual implementation of alcohol prohibition with the various Province's going "dry" between 19, though there was never a "national prohibition" passed in Canada.
By time National Prohibition was fully implemented in the U. in January of 1920, the only area north of Mexico that was not totally "dry" was the Province of Quebec (Unitt 1972).) The push for individual State and eventually National Prohibition came right at the time (1910s) that bottle makers were making the transition from mouth-blown to fully machine-made bottles.
(It should be noted that implementation of this requirement began in late 1934, so some bottles made that year will have the noted embossing.) This regulation was repealed in 1964 giving an effective dating tool of 1935 to the mid 1960s for this diagnostic feature (Munsey 1970).
Be aware however that for some years after 1964 liquor could still be found in bottles with this embossing since not all liquor producers switched immediately to new bottles due to the expense of new molds or to deplete an existing supply of bottles (Ferraro 1966).