German, G.J., Asch leben Seal, Image & Found by Bobhoe.
Found in England, ?mm.
G.J.(& ..?) / 6 pointed star / ASCH[ERS]LEBEN curved around the bottom // thought to be blank
A continuous raised circle forms a border with G.J.(& ?) followed by an illegible letter (or even two) in a straight line. Beneath in the centre is a 6 pointed star and curved around the bottom is possibly ASCH[ERS]LEBEN but it is not clear. The other side is thought to be blank.
From Wikipedia "Aschersleben is a town in the Salzlandkreis district, in Saxony-Anhalt, Germany. It is situated approx. 22 km east of Quedlinburg, and 45 km northwest of Halle (Saale)."
Two of its main industries are Sugar and Seeds so possibly a connection there.
More likely to be a potash seal - see BSG.BS.02027.