Herrli, Hans, The Coins of the Sikhs (2nd edition), New Delhi 2004, published by the author, xii + 301 pages, hardbound, a major advance over the first edition, with many additions and more pleasing arrangements. Coins are illustrated by hand-drawn images. Organized by mint, then divided between precious metals and copper coinage, long out-of-print, ex Ajit Singh Collection.
Estimate: 50-70 USD