http://www.moogmusic.com/content/moog-m ... nthesizers
Source: http://www.moogmusic.com/news/return-moog-modularToday, it is with great excitement that we announce our plans to recommence a limited run, manufacturing of three of our most sought after 5U, large format, modular synthesizers: The System 55, the System 35 and the Model 15. These three modular synthesizer systems were originally created and manufactured by Moog in 1973.