Artist Glass Art Glasses Set of 2. The artist's signature and serial number are on the bottom. ・No. 584 (Blue) ・No. 597 (Red) They appear to be works by the same artist. The exterior has a unique crackled silver-like texture, and depending on the light, you can see a bluish or metallic sheen. The interior is made of transparent, beautiful colored glass, and the contrast between red and blue is very striking. These are warm, handmade art glass pieces. Recommended for interior decoration or as collectibles. Please check the photos for condition. Please understand that there may be minor scuffs due to being a used item and long-term storage. #ArtGlass #HandmadeGlass #GlassArtist #RedGlass #GlassGlasses #VintageGlass #Object