A lead bag seal of Webb & Sons, seed merchants. The seal is of the type that has a central hole through which the fastening cord is passed prior to stamping.
One side of the seal has the inscription, WEBB & SONS WORDSLEY STOURBRIDGE (around), THE QUEEN'S SEEDSMEN (across in three lines). The other side has the inscription, REGISTERED TRADE MARK around a crowned emblem, which has WEBBS across the top.
It would appear that the company was established during the reign of Victoria, the queen to whom the inscription refers.
See also UKDFD 3142.