Cloth Seal, French, Lyon, Image by StuE, Found by Nasher.
Found near Baldock, Hertfordshire, 14mm, 3.3g.
Shield bearing (L)YON above a lion rampant, 79 below right // part of shield bearing a lion rampant
See No.300 Fig.39, Geoff Egan , 'Lead cloth seals and related items in the B.M.' (B.M.occ.papers 93), "crown over shield with three fleur-de-lis, square chain border // shield with lion rampant ... One-part custom seals for bales of exported silk. Legislation in 1540 (article XI) describes seals of this kind with the royal arms and those of the city as pieces a une cordette from the way they were secured with a white cord."
See DL38, p.38, Les Plombs de Scelle La Douanne de Lyon, Daniel Slowik, 2014, for other examples of this type.