Cloth Seal, Dutch, Leiden, Double Headed Eagle

Cloth Seal, Leiden, Double Headed Eagle, Image & Found by Markus McMillan.
Found on Thames foreshore.
Leiden cloth seal. Double headed eagle on one side and LEY with DEN beneath on the other. Below the DEN and slightly overlapping it is a circular stamp with the letters C and a possible flower above D and possibly G.
From finder:- "the small inner circle reads C then looks like an anchor or you're right a flower then underneath DG"

No. 322, Fig. 43 Geoff Egan, Lead Cloth Seals & Related Items in the British Museum, shows a Leiden seal with a small secondary stamp of a double headed eagle proving that this symbol was used by this city along with the more common crossed keys and lion rampant holding sheaf of arrows.

An interesting publication that contains a lot about the practice of sealing cloth in the Netherlands and Leiden in particular is:- Nora Maria Rodenburg, Master Thesis Department of Archaeology and Antique History 23 May 2011' Seal and Deal, Cloth Production and Trade between the Netherlands and Scania during the Late Middle Ages and Early Modern Times.