It indicates a date of death for Mary J. Randles, the wife of Emberson Randles, who was receiving a pension based upon his service.
Mary's death certificate is online at FamilySearch. The Ohio Historical Society also has an index to Ohio death certificates for the time period of interest as well.
We'll have an update shortly--along with the story of how her death certificate was actually found.
Stay tuned--or try searching for her yourself.