Hi David,
According to the number of the medal 78298 - it should be like this one.
The Medal for Bravery of 4 th Class with the number 165078 was awarded to Corporal Alexander Godsman, 1st Battalion, Highland Light Infantry on 25/08/1915, so "yours" medal was awarded earlier.
Medal for Bravery was established at first during the reign of Tsar Alexander I in 1807. During the reign of Alexander II the medal got 4 classes and was intended mainly for decoration of border guard rankings. In the first years of the reign of Emperor Nicholas II, the Medal for Bravery was thoroughly redesigned and its statute changed.
The obverse of the silver Medal for Bravery shows the truncated bust of Tsar Nicholas II facing left encircled by an inscription "By the Grace of God Nicholas II Emperor and Autocrat of All Russias". The reverse of the Medal bears an inscription "For Bravery, Fourth Class, No. ******".
From 01/01/1914 till 01/01/1917 1335150 medals of 4th class were stamped (numbers 1-1333100).
metal: silver (medals of 1st and 2nd class were of gold)
diameter: 28 mm
ribbon: St. George
Mike