Antique stacking bookcase

I don't really know a lot about this, I would call the color mahogany, it belonged to my grandparents. Overall height is 57.5" each sec is a different size(1st, bottom is 19" from floor, 34" wide) (2nd is 13.25" tall) (3rd is 11" tall) ( top is 11" alone, 14" with the top shelf placed on)  3 of the 4 glasses are plain, top has retangular accents.