A reddish brown overlay white glass snuff bottle, Yangzhou school, 1830-1890. Photo Bonhams. Of compressed spherical form, with a flat lip and red oval foot rim surrounding a convex foot, the single reddish-brown overlay highlighting the low relief carved...

A blue overlay white glass snuff bottle, Yangzhou school, 1800-1840. Photo Bonhams. Of compressed pear spherical form with a flat lip and sapphire blue oval foot rim surrounding a flat foot, with fixed mask ring handles to each side, the blue glass carved...

A red-overlay white glass snuff bottle, Yangzhou school, 1850-1890. Photo Christie's Image Ltd 2014 Of flattened, rounded form and raised on an oval foot, the bottle is finely carved through the opaque, red overlay with an immortal riding a crane in flight...

A brown glass overlay snuff bottle. Yangzhou school, cyclically dated jiashen, corresponding to 1824 Of flattened rectangular form with gently rounded shoulders surmounted by a short cylindrical neck, resting on an oval foot, finely carved through the...