The MMC20EN was the standard cartridge fitted to the top of the line Beogram 4002 and 4004. It followed the very successful MMC4000 and retained the naked elliptical diamond stylus seen on that model. A fine tapered cantilever was also fitted to provide excellent performance. In common with the MMC 4000, it was well-respected for its sound quality and less sensitive to environmental changes than the MMC 20CL.
Look at the pictures, they tell the story of this time capsule cartridge. Not NOS, but darn good condition. Don't pay more to Soundsmith! Get the original! :)