This set of 20 vintage glass marbles is a true gem for any collector or enthusiast. The marbles are UV reactive and have a beautiful glass style that is sure to catch the eye. They are different sizes see and have not been modified in any way. (See pics) The country of origin is unknown, adding to the mystery and intrigue of these marbles. Whether you're looking to add to your collection or just appreciate the beauty of vintage glass, these marbles are sure to delight. They are perfect for display or play, and will make a great addition to any collection.