A full set of glass lenses in a wooden case with a blue silk lining and corresponding exam glasses. Incredible example of optometry and travelling medical equipment at the turn of the last century. All but two lenses are in excellent condition. Two are cracked. Dimensions of wooden case are 14 3/4 x 8 1/2 x 2 1/8 inches. Glasses are 5 1/2 x 1 1/2 x 1 1/4 inches. Glasses are separate from the lenses case. From the Netherlands in the early 20th century.