It is stamped “Burslem Pottery Co 1917 Leadless Glaze”. Most glass and ceramics on the battlefields have been smashed up into minuscule pieces by ploughing.
WW1 British Ceramic Arras Battlefield Relics NACB 1917/18 Pottery Personal Finds
WW1 British Ceramic Arras Battlefield Relics Burslem Pottery 1917 Personal Finds
WW1 British Ceramic Arras Battlefield Relic Doulton Pottery 1917 Personal Find
WW1 British Ceramic Somme Battlefield Relic Pork Pie Ink Well Trench Find w Cork
Original WW1 British Army 1918 Christmas Card Manchester Ypres Somme Arras
Replica Pack 03 British WW1 Trench Maps Arras, Wytschaete and Zonnebeke BOK599