Watch List notes:

Thailand, Siam, Mêkhong River Valley, 'Tiger tongues', base silver five tical 'lat' or bars, 3 clear "Na" counterstamps, 113.5mm., approx. wt. 84.5gms. (Le May pl. IV, 1; Kneedler, pl. VII, 4); another, single counterstamp, both very fine (2)

Estimate: 150 - 180 GBP