Watch List notes:

Commemorative Medals, Map of the World, the two hemispheres, white metal medal, c.1820, believed to be by Thomas Halliday for Thomason, the Eastern and Western Hemispheres to either side, Australia named as "NEW HOLLAND", 74mm (BHM -; Eimer 1139), in velvet-lined square red leather case of issue, a superb medal in brilliant mint state, extremely rare
(400-600)