Crystal sherry glasses

Three fine ( I think Sherry glasses) acid etched with bunches of what seem like Cherries.
No idea of age, but they have belonged to my friend for more then 60 yrs, before that they belonged to his Grandma. He remembers 5 glasses and a small matching decanter. They have a wonderful ring when you tap them. There are no marks, if any body could tell us more, that would be great.
Many thanks for looking