Set of two Grand Marnier CREAM Snifters

Made in France in the 80s, fancy brandy / cognac / whatever your spirit of choice is out of the best glassware for sipping and getting good aroma. On the bottom on each is etched ‘France’ & ‘iumarc’(?) I believe - correct me if I’m wrong. Also has 2 & 4 cl marked on the outside of the glasses (see pics). Great for a fancy home bar collection. Will polish again once purchased before I send.