This vintage glass bottle, marked with the numbers 519-B, 23 7, 1 and the brand name "Mrs. Stewart's Bluing," is a clear, empty vessel that was manufactured in the United States. It is a unique addition to any collector's assortment of modern bottles and insulators. The clear color of the bottle enhances the vintage appeal and is sure to stand out in any display. This item is perfect for those who appreciate the history and charm of vintage glassware .Excellent pre-owned condition with no crack or chips-EX