A two disc cloth seal from Haarlem showing that city's arms.
See No.321 Fig.43, Geoff Egan, 'Lead cloth seals and related items in the B.M. (B.M.occ.papers 93)':-
"Seventeenth-century. The arms are those of the city (the cross is patee in most versions), and the figure is for the measured length of the piece in Dutch ells. The full stamp with the arms would have had the surrounding legend HAERLEMS GOET ('goods from Haarlem'). Haarlem's fine linen (known in England as 'holland') is widely represented by finds of seals with a variety of stamps."