Another medal that came to me as a result of the ACA story was the Victory Medal awarded to 269 Allan Hamilton who served in the 13th Light Horse Regiment. He later transferred to the 13th Field Artillery Brigade. Even though his records doesn't reflect this, it is highly likely that Allan participated in the battles at Lone Pine. (For accessing service records please refer to this tutorial). Allan died in 1949.
I had to revisit this research but I've now located Allan's great niece, Loretta, and will send the medal to her shortly.
Thanks to Peter H who sent me the medal and to Betty Harrison who helped me contact Loretta. The returned medal tally is now 1277.