China: Qing Dynasty (1644-1911 CE), large coin-shaped charm with square central hole, obverse 'Ping wu shi qian', reverse inscribed 'Wu zhu' and 'Ji' in seal script, 149*7.5mm, 564g. Previously a relatively unknown type in terms of function, but now recognised as a talisman for businesses and pawn shops..
Estimate: 2000 - 4000