Cloth Seal, Dye Seal, London Dyers Company, Swan

Cloth Seal, London Dyers Company Seal, Swan, Image & Found by Tom Redmayne.
Found in Lincolnshire, 23mm.

Swan // missing but rivet stub stamped with part of a madderbag, W above

The madderbag is a symbol used by the London Dyers' Company (W normally for woaded) and the swan is most probably a reference to Old Swan Lane on the central London waterfront area where the guild set up its work places.