Cloth Seal, Dye Seal, Dyer's One-Part Seal, Image & Found by Angela Bridge.
Found on Thames Foreshore, 11mm.
Privy mark (possibly incorporating G A) // blank
Dyers one-part (bulla type) seal, Very similar to those shown in Fig.37 in Geoff Egans 'Lead Cloth Seals and Related Items in the British Museum' which he categorises as a dyer's one part seals found ‘in some numbers ... from Trig Stairs to London Bridge’. He dates them from the late 16th to 17th centuries.