Nandinagari

Nandinagari is a variant of Nāgarī script which appeared in the 8th century AD. This script and its variants were commonly used in Southern India.

Nandinagari Script Chart with Devanagari and Latin Script

Wikimedia http://commons.wikimedia.org/wiki/Category:Nandinagari has a couple of high resolution photos of copper plates in Nandinagari. http://www.harekrsna.com/sun/features/06-07/features681.htm discusses some aspects of the script.

There is currently a proposal to assign a Unicode block for Nandinagari.