First some pictures of the board itself with its keycaps on :
![Image](https://farm9.staticflickr.com/8840/17107964203_7d81989cf7_h.jpg)
![Image](https://farm8.staticflickr.com/7735/17107893853_7231240a10_h.jpg)
![Image](https://farm8.staticflickr.com/7782/17728472801_305b095342_h.jpg)
Now some comparison pictures.. (apologies for the dusty keycaps)
On the NCR, the keycap colours are noticeably different. The modifiers are a middle grey rather than a light grey/beige, and the alphas are a light grey rather than white. The legends are also very dark grey instead of black (the 3100SAU keycaps pictured have slightly faded legends). And, most noticeably, the NCR keycaps have visibly different legends which I've highlighted and compared to a G81-3116SDU with regular legends.
![Image](http://i.imgur.com/usgHiq7.jpg)
![Image](http://i.imgur.com/jR0i3TN.jpg)