Sancy Hope diamond. The Sancy was in the collection of Vasiliy Rudanovsky until 1828 when purchased by Prince Demidoff for £80,000. It remained in the Demidov family collection until 1865 when sold to Sir Jamsetjee Jeejeebhoy, an Indian prince, for £100,000. He sold it only a year later, creating another gap in its history. It reappeared in 1867, displayed at the Paris Exposition, carrying a price tag of one million francs; the gem then vanished again for forty years. The Sancy next surfaced in 1906 when bought by William Waldorf Astor, 1st Viscount Astor, from famous Russian collector A.K.Rudanovsky. The prominent
3M "3M bookshelf game series" brand. These games were marketed to adults and sold through department stores, with easily learned simple rules but complex game play and depth and with uniformly high-quality components. As such, they are the ancestors of the German "Eurogames". The games covered a variety of topics, from business and sports simulations to word and abstract strategy games. They were a major publisher at the time for influential U.S. designers Sid Sackson and Alex Randolph. In the mid-1970s, the game line was taken over by Avalon Hill. 3M's Mincom division introduced several models of magnetic tape recorders for