This is a bowl glass, not for ice cream. Bowl was an insipid mix of canned fruit and lemonade (and cheap vermouth if you were lucky) to be served at Dutch birthday parties in the 1950s and 1960s after two cups of weak coffee, a piece of cream cake and one small chocolate. The large rim is for cherry stones. Bowl glasses were made in Maastricht, Leerdam and by several makers in Germany where such party fun is equally enjoyed. I've not seen any from Belgium but I would not be surprised.