Cloth Seal, County Alnage, Image & Found by Tomredmayne.
Found near Louth, Lincolnshire.
A two disc seal showing a portcullis with an S before it. The other side with the Roman numerals (X?)XVIII but this could well be fragmentary.
See:- PROVENANCED LEADEN CLOTH SEALS by GEOFFREY EGAN, Sub-Department of Medieval Archaelogy, University College, University of London. submitted for the degree of Doctor of Philosophy, 1987, "The most common later 16th-century county stamps have a crown over a portcullis, with Lombardic- or Roman-letter legends (fig. 13A & B). The other side sometimes has Roman numerals for the weight in pounds of the cloth, or an alnage-officer's privy mark. The portcullis stamp often appears alone. This series may well have originated in the early 16th century, ... Other letters (apart from the royal initials) recorded to the sides of the portcullis are SR and CW. These may be the initials of alnagers."
So a late sixteenth century county alnage seal attached to a length of cloth weighing 28lbs, possibly by the alnager SR.