Hoping to reunite WWI USMC Otto Gullion’s Medal Grouping - DSC, NC, SS, and GCM with his Colt 45

[USMC8287]

I am trying to locate and acquire Otto Gullion’s medal grouping in order to return it back to the last year they were together before Otto’s passing in the 1960’s from a railroad accident. I have his Colt 45 in my collection, and for sometime I knew that Bob Gill had his medal grouping. However today I was informed by a forum member that is helping to manage Bob’s estate that he sold them a few years ago. Any help in locating this grouping would be greatly appreciated. Thanks for your time and consideration. Stay well!