Turkish War Medal (Harp Madalyası) - 1915

The Turkish or Ottoman War Medal was also known as 'Harp Madalyası', or sometimes the 'Gallipoli Star'.
According to the Australian War memorial, the Turkish War Medal was a decoration, in a single class, that was instituted on 1 March 1915 for bravery and war merit. It could be awarded to members of the army, navy, and nursing services of both Turkey and its allies. Although it is sometimes erroneously called the Gallipoli Star, it had no special connection to this campaign and was awarded throughout World War One.
The decoration, as issued, was in base metal that was crudely enamelled or lacquered, and had a poor quality pin fastening on the back. Other, better quality examples of the War Medal, such as this one, were made in both Germany and Turkey, using silver plated metal and high quality enamel. They were slightly convex, instead of the flat issued examples, and had a more robust pin fastening.
The existence of both types of medal led to the supposition that the poorer quality medal was for the ordinary soldier or sailor and that the silver plated version was for officers, or that the medal was issued in two classes. However, they are variants of the same medal, although it is likely that it was mainly officers who were able to afford the higher quality version to replace the poorer quality medal originally issued to them.