The medals on this bar in order of seniority from left to right are-
Prussian 1914 Iron Cross, second class
1914-18 Honour Cross for combatants, shown only on the miniature bar
Prussian Other Ranks Long Service Award, first class for 21 years service
Colonial Service Medal

The original owner of this medal bar and miniature ribbon bar was an other ranks veteran who served in a colonial campaign though he has no clasp on his Colonial Service Medal to show which campaign. The certificate for the Colonial Service Medal always specified which campaign the medal was awarded for but the recipient had to purchase the clasp separately, not all of whom did. This veteran also served with distinction in the First World War, as can be seen by his Iron Cross and 1914-18 Honour Cross. It might well be that he served in a colonial campaign during the First World War.