Hungarian, Flour Bag Seal, NEUMAN TESTVEREK Seal, Image by StuE, Found by Nasher
Found in North Hertfordshire / Cambridgeshire area, 18mm, 7.9g.
Both sides have circular line border. Curved around the inner rim of the first side is ???MAN * T(E?)????R? * The other side has three large numbers 060 or 090 depending on orientation.
The first letter could be M or N or even H. No product or company has yet been associated with this seal.
From Philippe Lanez, "NEUMAN TESTVEREK (Bros)// ARAD See BSG.BS.01252."