H.W. Nevill Seal, Image by StuE, Found by Nasher.
Found in North Hertfordshire / Cambridgeshire area, 20mm, 8.9g.
A plain seal with H.W.NEVILL curving downwards at the top and LONDON straight across the middle. The other side has (GROWERS?) curving downwards at the top, STANFORD / MILLS in two straight lines at the centre and BIGGLESWADE curving upwards at the bottom.
See BSG.BS.02166 for a different H W Nevill seal and more information on the man and his business.