neil its one of the temp make do badges,they sometimes used a button or had other temp badges made up till they had enough proper ones made.
louise,two brothers in my hometown regt the manchesters fought on gallipoli,little alfie was 14 when he sailed with his battalion,his brother was 15,there were at least 50+who were 15 years old and a couple of hundred aged between 16-18,you didnt need proof to enlist,if you were already serving when the war started and you were underage,then you needed permission from the colonel to go abroad on active service,59 is the number of the 2nd battalion east lancs regt,mack