12-18-2011, 09:36 PM
The HP-15C Limited Edition is a reproduction of the 15C based on the modern ARM powered 12C hardware, released at the same time as the 30th Anniversary Edition HP-12C. This model is powered by 2 CR2032 batteries, and can easily be differentiated from original production run (1982-1989) 15Cs by the "Limited Edition" script below the HP 15C logo, and the black text on brushed metal back label, as opposed to the white text on black of the original.
http://en.wikipedia.org/wiki/HP-10C_series#HP-15C%20Limited%20Edition