Another way to tell older Turlington bottles from their slighty newer counter parts are the round contours in the shoulders of the bottles.
The next generation still sporting the flared lip had squared shoulders in comparison.These evolved into the next generation of rounded lips.
I may be missing some bottles in time periods that may straddle these but this is fairly accurate.From left to right the evolution of the Turlington bottles in a Darwinian graph.
I wish I had the bottle all the way to the left.Do any of our British members have one or know where one is available.
I guess I should post this portion in the wanted section.
There is also an earlier type that is rectangular used before the 1754 type. I have seen pictures of a couple of them on the British forum. And quite a few later English flint glass ones. That date 1760s-1800. I saw one that was about twice the size of a normal Turlingtons with a 1770s patent date in flint glass few years ago at a show in Pa. Heres an early Flint glass example thta I dug in Philadelphia from a late 18th century privy.
As always, another great post of info by you. Thank you. I have always wondered about these, I have seen them at every show we have been to. I knew they were old, but just wasn't our thing.