Hoo... Minerals Seal, Image by StuE, Found by Clive74.
Found in Britain, 21.8 x 19.0mm, 9.0g.
A bag seal with (probably) the same design on both sides. An anulus with writing between the raised solid line circles as follows:- HOO?ST??? curved around the top and MINERALS curved around the bottom.
Not much is visible of the image at the centre of the anulus. A leaf or flower or even an ear points out to the H in HOO and what could be a fruiting body of some sort hangs down at the bottom?
This bulla type seal was obviously attached with wire that has left significant rust stains and caused a large eruption on one side.
No product or firm or organisation has been traced to this seal.