Stone ball with 40 concave facets, potentially a Neolithic carved stone ball, from Cronie Farm, Kirkpatrick Durham

Masses of clay, apparently kneaded by hand, from Modesty, Shetland

Masses of clay, apparently kneaded by hand, from Modesty, Shetland

Ball found in a cairn at Breckigoe, Thrumster, Caithness

Decorated copper-alloy ball from Walston, Lanarkshire, made in two halves, with decoration which suggests a 3rd - 5th century AD date, but its use is unknown

Plain stone ball pecked into shape, locality unknown

Smoothed plain ball of sandstone, from Moss of Bulwark, Old Deer, Aberdeenshire

Ball of rough plain sandstone, from Eldonhaugh

Ball of greenstone from Silverburn, Midlothian

Half of a ball of greenstone, from Peeblesshire

Ball of granitic stone, from Lochend

Oval ball of granite from Buchan, Aberdeenshire

Oval ball of greenstone from Buchan, Aberdeenshire

Plain spherical ball of stone, from Buchan, Aberdeenshire

Plain spherical ball of stone, from Buchan, Aberdeenshire

Plain spherical ball of stone, from Buchan, Aberdeenshire