a piece of History -soldiers pay book 31 march 1917

I have just been given a Soldiers pay book from the great war ,an amazing document that belonged to John Hatfield of Sheffield of the East Yorks Regiment .It contains some fascinating information showing ,wounds ,pay rates and pension even shows what equipment was not handed back in at end of service (mosquito net -mug and S.B.R 3 ) a wonderful thing which I may sell to raise funds for the Royal British Legion or donate to a museum .