It is from around the 1980's and is fully functional as a cocktail shaker or can easily be repurposed for other uses.
The product is a set of four vintage Mikasa Concerto highball crystal glasses, made in Yugoslavia during the 1980s. These elegant and contemporary glasses feature a swirl pattern with a glossy finish, perfect for all occasions. Handwash only, they are 5 3/4" tall and have a capacity of 10 oz, making them a stylish and classic addition to any drinkware collection.