IN OFEN Bag Seal, Image & Found by Dougitup.
Found in Yorkshire, 15mm x 5mm(thick).
Button shaped bag seal with outer circle of writing that cannot be made out. Next circle reads GESELLSCHAP? (maybe GESELLSCHAFT - society) IN OFEN with the IN being in the centre. The other side has a number 2 on it.
Philippe Lanez suggests - Blum'sch Dampfmuhl-Actien-Gessellschaft. in Ofen (Gessell = Company)