Sancy Astor family possessed it for 72 years until the 4th Viscount Astor sold it to the Louvre for $1 million in 1978. The Sancy now rests in the Apollo Gallery, sharing attention with the likes of the Regent and the Hortensia. Sancy The Sancy, a pale yellow diamond of , was once reputed to have belonged to the Mughals of antiquity, but is more likely of Indian origin owing to its cut, which is unusual by Western standards. The shield-shaped stone comprises two back-to-back crowns (the typical upper half of a stone) but lacks any semblance to a pavilion (the
3M to the Sound 80 studios in Minneapolis. After drawing on the experience of that prototype recorder, 3M later introduced in 1979 a commercially available digital audio recording system called the "3M Digital Audio Mastering System", which consisted of a 32-track digital audio recorder and a companion 4-track digital recorder for mixdown & final mastering. 3M later designed and manufactured several other commercially available models of digital audio recorders used throughout the early to mid-1980s. 3M launched "Press 'n Peel" in stores in four cities in 1977, but results were disappointing. A year later 3M instead issued free samples directly to