steve,the rose+clasp were instituted to be worn on the 1914 star and his ribbon bar.
the clasp was awarded to all those who were under fire in france+belgium between 5th aug-22nd nov 1914,it means your g/father was in the retreat from mons,this is worn on his medal,the rose is worn on the ribbon of his 1914 star when hes wearing his ribbon bar,its not worn on the medal,mack