Watch List notes:

COMMEMORATIVE MEDALS BY SUBJECT, Exploration, World Map Medals (2), White Metal, c.1820s, by Thomas Halliday(?), and possibly struck by Sir Edward Thomason, map to either side, 73mm and 50.5mm (Eimer 1139). Both lack 'silver' surface, very fine. (2)
Australia is depicted as New Holland.

Estimate: £200-300