I envy you the visit Ivo - history is so interesting. Just to add a little more detail to the history of coolers/rinsers, which apparently are more likely to be described as rinsers in the States.
From their beginnings in the U.K. (middle of the C18?), and through most of the period of George III and IV - c. 1780 to 1830 ish - rinsers tend to have straight sides and are deeper than the bowl shaped shallower pieces that succeeded them, and very early examples appear to have had a single 'ear/lip only............. in the C18 it's suggested that there was just one glass used for drinking, and this may not always have been for reasons of economy.
The earlier straight sided examples .... the overall shape was tapered inward slightly toward the base .... appears to have been a shape that derived from having started life in a mould, which would of necessity been slightly wider at the top, to avoid any problems in removing the glass once shaped.
Green was a colour that occurs very commonly for vast amounts of glass shapes in the C18, C19 and C20 - rinsers and finger bowls being no exception, but such items are seen only rarely in uranium glass, and in view of the date of invention by Reidel, won't be found in table glass prior to c. 1840.
Ref. 'Glass Antiques Checklist' - Mark West - 1994
'English, Scottish & Irish Table Glass ' - G. Bernard Hughes - 1956.
'Coloured Glass' - Derek C. Davis & Keith Middlemas - 1968. plus 'the internet' - current.