Antique Bottle Identification Help Double Ring Variations

These finishes or tops or lips as they are referred to are very common in flasks And in larger medicine bottles such as hoods sarsaparilla, and Dr Kilmers Swamp Root products.
The two bottles in the above picture represent an older and a slightly newer version of the double lip finish. The flask on the left is a simple amber flask with no markings. The one to the left is an unmarked Amber medicine such as would be found in many of the Mange Cures. Notice the horizontal lines on the neck of the medicine bottle. These are caused by the introduction of a tooling mechanism Called a living tool. Please were hand operated. They were used to smooth out the neck. They are a metal tapering clamp of sorts that would be fastened around neck of the bottle and spun resulting in these lines.
According to Cecil Muncie, in his book collecting bottles finishing or looking to Marks are important because of the relationship to seem marks on the neck of the bottle, they often erased the seams in the process of finishing. Tools of specifically for finishing or developed around 1830 in England and around 1850 in America these devices usually consisted of a rod which was inserted into the mouth of the bottle and an associated part that could be clamped to the outside of the mouth of the neck by rotating the device the lip is finished and the scenes erased.

The flask on the left has an applied double ring with no tool lines. It is therefore older. Many of the Warren teed flasks also have the double lip. The clear bottles showing the tooling much more obviously.