There are lots of these examples around from various regiments. Moss date around 1913. Some a little earlier. Basically the regiments had an authority to issue their own medals - these relate to the 25, 50 0r 100 year birthdays of the regiments. The 1913 period had particular significance in Prussia, because this related to the war of liberation '1813'. I do recall/ think seeing a photo (I cant find my copy!) in the introductory section of Charles WoolleyUniforms & Equipment of the Imperial German Army 1900-1918 where there is a full page shot of a retired Dragoon NCO - and there looks like a 100 yr medal & bow is pinned following the ribbon bar.