Escot auxiliary lenses, in original case. One telephoto and one wide angle. These fit on to the front of existing lenses to give tele/wide effects. The glass is free from serious defects (no haze or fungus) but there is dust and other light age related artifacts. Not serious. The mounting thread looks to be about 44mm which I assume is possibly Series VI but I'm not sure.The wide angle also has a step down ring to about 43.5mm. With two caps.