old SHERATON HOTELS water glass

This little water glass is 4" high and bears the SHERATON HOTELS crest. Made by Libby, it has their 'cursive L' logo at the center of its bottom. Not certain exactly how old it is, but I've probably had it for at least 30 yrs. I would imagine this would have been 'in-room' glassware for the convenience of hotel guests, as Sheraton restaurants and bars probably would have had fancier glassware.