These are the two 'Rummers' I bought today. They are classic ones, and stand a little under six inches high (or one does - the other is a little smaller).
They are called Rummers, because they were traditionally used for hot rum toddy. You would mix the rum, spices, sugar and whatever in the glass, then plunge a hot poker into it in order to heat it up. Then you stirred the mixture. Many rummers have scratch marks on the side where it has been stirred. These don't. They are in perfect condition. They were also used for cold mixtures too, and were very widely used between around 1790 and 1860. These ones date from around 1820.
There are quite a lot of different styles, but these are the classic, late, English Georgian ones, with Capstan stems and sharp pontil marks on the bottoms. I have had dozens in the past, but these I may keep for personal use - beer, etc. All pubs and private houses had them, so there are plenty still left around.
I will put up a video of me 'pinging' a rummer - the sound is wonderful and sustained. Here it is below - the video doesn't do it justice. The rummer below is one of a perfect pair, and dates from around 1810 - 1820. Napoleon (and Wellington) was/were still alive when these glasses were made.
Nice eh? I have had glasses which 'ping' for around twice as long as this.