I'm speculating that it's just a significantly whitened Space Saver with:
-Super white plastic
-Apple numpad layout (smaller + key, added = key, no alternate nav functions on the numpad, clear instead of numlock)
-F13-F15 instead of PrntScrn, ScrollLock, and Pause/Break
-Apple bottom row layout
-Help instead of Insert
-Return instead of enter, fake delete instead of Backspace.