WWI identity disc made from a coin for Private William Keable

William Keable was born in Norwood, London, on 29 February 1896. He appears to have made his way to Australia as a teenager, and was apprenticed to the engineering business of George Foster & Sons of St Peters, Sydney for 4 years.
He enlisted in Sydney, aged 19 years and 5 months, with the 4th Reinforcements, 18th Battalion A.I.F., on 27 July 1915. He required written consent from his mother to do so.
He embarked from Sydney on board HMAT A8 Argyllshire on 30 September 1915.
He was transferred to the 3rd Battalion on 19 February 1916 in Tel-el-Kebir and embarked from Alexandria to Marseilles on 22 March 1916. He was severely wounded at Pozieres on 22 July 1916, receiving a gunshot wound to his face and shoulder. He lost an eye as a result of this.
He was transferred from the 44th Casualty Clearing Station to the 3rd London Hospital (Wandsworth) and then eventually sent home to Australia by hospital ship. He was medically discharged on 31 August 1916.
Even with these injuries, he was keen to do his part, so re-enlisted, before again being discharged.
He then volunteered with the Mascot Influenza Depot, where he ultimately contracted influenza and died on 17 May 1919, aged 23.
Based on his service record, it was made and purchased between February and March 1916,
The coin was manufactured during the reign of Sultan Mehmed V, 1909-1918, by Heaton & Sons of Birmingham, UK. However, the identity disc would have been made in Egypt by a local vendor providing souvenirs to the visiting soldiers, and personalised in this case for William Keable. Based on his service record, it was made and purchased between February and March 1916,