I mentioned earlier on this page that you can tell the difference by the serial number of the camera, where serial numbers lower than K150848 have the old design and serial numbers higher than K152262 have the new design. I don´t know exactly with which serial number the design of the shutter has changed. If you happen to own a NC 1000 S with a serial number in between these two numbers, it would be cool if you could find out about the design of the shutter of your camera.
It would be great if you could open the bottom of your camera and compare the design to the above pictures and e-mail me your findings (old or new design, serial number). I will then add it to the table below and make the results available for other Mamiya NC series collectors. Your support is greatly appreciated and will help making this website more comprehensive. Thank you!
Disclaimer: Even though it is very easy to take the bottom cover of your NC 1000 S camera off and back on (nothing is falling out etc.), you do this at your own risk.
Serial Number Survey: Mamiya NC 1000 S and NC 1000 Cameras
Here´s a list of several NC series cameras which have been checked for the shutter design so far. At this point, I would like to greatly thank Joachim Pototzky - another German Mamiya NC series enthusiast - who was the one to help me find out these details (my initial assumption that the new shutter design was introduced with serial numbers starting with K2... was wrong). I would be happy to add more cameras to this list, and I would appreciate your input.
I have now several reports of NC 1000 cameras with low serial numbers (old shutter design), so it appears that the NC 1000 was introduced at about the same time as the NC 1000 S (or possibly even before the NC 1000 S). I am very interested in finding out more about these low serial numbers models.