Dating miniature liquor bottles
In short, there was (and is) nothing to stop a glassmaker from using an obsolete method in the production of a bottle.3.
Some technological changes were expensive and not adopted by glass makers until it became an "adapt or perish" issue and many glass factories just perished.
Of course, soda & beer were reused up until quite recently.
The bottle pictured to the right has a Wait's Liver and Kidney Bitters label pasted over the embossing of a Star Kidney and Liver Bitters bottle!
The information on this website will, however, usually produce a reliable manufacturing date range for a majority of American utilitarian bottles manufactured from the early 1800s to the mid-20th century.
But any technique, once developed, can be used right up to the present - as many collectors know who have been so unfortunate as to rely too heavily on a popular termination date as sure evidence of true antiquity..." (Toulouse 1969b).
This bottle dating "key" is a relatively simple "first cut" on the dating of a bottle.