vintage crystal goblets etched Prince of Wales crest investiture of Charles

Pair of vintage etched crystal goblets with the crest of the Prince of Wales. There are no makers marks on these that I could see, but I'd guess they were probably made at the time of the investiture of Charles, late 1960s. They're water glass size, about 6 1/4" tall. Both show light use / wear, no chips or roughness.