Mamiya NC series
The NC Series
NC Series from Mamiya is part of their long discontinued series of 35mm SLRs. This series had two cameras in it: NC 1000 and NC 1000S. They had their own bayonet mount (CS mount). Lenses for this series are still available with relatively less rarity and can be found appearing on Ebay at regular intervals.
There was a name variant of the NC 1000, sold by Sears and called the Auto CS 1000MXB in black and Auto CS 1000MX in chrome.