For those who are curious. I have found that that this is a “shlel”, from Marroco. (Lavabo in French.) It had nothing to do with coffee or tea. The woman of the house welcomes the guests and let them wash their hands with the warm water in the pot. The water flows over the hands into the ‘container’. The signs below are from a manufaturer in Fes (a famous place in Marrocco). There is no database with the signs.
This is what I am told by people from Fes.