Carved stone ball, with five discs, ornamented with small knobs in concentric circles, found near Fordoun, Kincardineshire

Carved stone ball, with six discs and small knobs inbetween, from Craig Beg, Ballater, Aberdeenshire

Carved stone ball, with six knobs, one ornamented with incised cross lines, from Loch Lochy, Inverness-shire

Carved stone ball, with six knobs (one broken), from Newburgh, Fife

Carved stone ball of greywacke, with six knobs, from near Banff, Banffshire

Carved stone ball of granitic stone, with seven knobs, from Aberdeenshire

Carved stone ball, with six circular knobs, two with incised concentric lines, from Aberdeenshire, 3100 - 2500 BC

Carved stone ball, with 53 small projecting knobs, from Fyvie, Aberdeenshire, 3200 - 2500 BC

Carved stone ball, with 103 small knobs, from near Peterhead, Aberdeenshire

Carved stone ball of sandstone, with four knobs, from Olrig, Castletown, Caithness

Carved stone ball of gritty sandstone, four knobs, from Aberdeenshire

Carved stone ball of greenstone, with six low knobs, from Aberdeenshire

Carved stone ball of dark greenstone, with six knobs, from Keills, Islay, Argyll

Half of a carved stone ball, originally with six knobs, four of the five surviving knobs are decorated with incised cross-hatching, from Nochnarie, Strathmiglo, Fife

Carved stone ball, with six knobs, from Wester Cairnie, near Forteviot, Perthshire

Carved stone ball of greenstone, with six knobs (one broken), from Perthshire