Ivory netsuke showing a mother breast-feeding a child, Japan, 18th-19th century.

Ivory netsuke showing a mother breast-feeding a child, Japan, 18th-19th century.

Brooch containing human hair, Europe, 1701-1900.

Model of an eye, Europe, 1601-1700.

Three hydrometers, 1700-1730.

Wooler motorcycle engine, 1950.

Aitken's pocket dust counter, 1890.

Aitken's pocket dust counter, 1890.

Anders Celsius, Swedish astronomer and physicist, c 1730s.

Pair of non-articulated metal legs for a male Thalidomide teenager, 1975.

Mount Cenis tunnel, Franco-Italien border, 1869.

Aitken's pocket dust counter, 1890.