This rare example of a viewer Stereomat island was made in Germany in the mid-1950s Unlike any other viewer, has three lenses, the middle is to enlarge the name of the image you are currently viewing. The viewer is made of plastic, and the like slides. When new, the visor costs 5 DM and slides 90 pfennig each. Each slide was six stereo pairs. These viewers sold at extremely high prices on the rare occasions when they are available. One (10 slides) sold in November 2006 for more than 280 pounds sterling.