Watch List notes:

Ratna Deva III. Ca. 1181-1182. AR pana (8 mm, 0.28 g). Type III, var. A. Goddess Lakshmi seated facing / Devanagari legend Ratna/Deva in two lines. Pieper -. Very rare - only 16 type III, variety A coins known. Toned. Choice very fine. 

A rare series first documented by Karan Singh in 'Classification of Ratna Deva's Silver Coins', JONS 220. The paper can be read here.