Hallo, I think there is no chance to identify the owner of the medal bar. 1. It was Ass.Arzt Dr. Castillon,who got the MEZ2 with the white ribbon in 1864 . But also got a MEZ1 in 1866. 2. In the RL 1870/71 St.Arzt Dr. Castillion is listed with both MEZ, but the white ribbon is not mentioned. May be that there other MEZ2 with white ribbons, which are not mentioned in the OL and RL. 3. In the 1868 OL there is no MEZ2 with a white ribbon for 1866 listed. Open question: Why is there a 1870 Combat Medal? Dueppel