Enormous ceremonial mottled brown nephrite jade dagger encrusted with a grey overlay, 15.5 cm x 17 cm x 0.9 cm to 0.5 cm thickness, Qing Dynasty. Squared handle, with black intrusions and a hole in the centre for attachment to a halberd, plus triple grooved striations at both sides. Blade decorated with a hatched diamond pattern at top. Fine condition, minor chip at top