The glasses are square and well preserved. The lenses are in good condition. The glasses are of high quality. There are signs of long storage and use on the glasses. There are a couple of small chips. Vintage Soviet Color Photo Glasses For Photography Equipment 6 Glasses 2 Lenses Good condition. Width 50mm. by 50mm. Lens diameter 47mm. Weight 151 grams. See details in the photo. Thank you !