Artillery Seal, Image & Found by Wagcat.
Found in Essex.
One side appears to have three cannons one above the other with a possible crown above similar to the insignia found on Honourable Artillery Company uniform buttons.
This seal was added in addition to any cloth workers seals presumably for Board of Ordnance security reasons. The Board of Ordnance was abolished in 1855 and although it was not reformed until 1881 when they took into use the same arms it is likely that the seals were used without break as much of the same functions had to be continued.
