Have just come across this old thread and am curious about the object which started the quest for information.
I am related to the Coops family and have some details of this particular branch.
Sarah Maria Leslie married Jabez Gorham Coops and had: Ida May, Milford, Robert Porter, Frank Harvey, Annie Florence, John J., Guilford Stanley/Stanley Guilford, Allister Harlow. Ida, Milford, Robert, Frank, Annie all went to U.S. Guilford/Stanley lived in Calgary, Alberta.
Allister, according to family notes: "Killed in action- he did not die outright, but had a leg amputated in hospital and died of shock somewhat later. Headstone in Milton (Queens Co., Nova Scotia) Community Cemetery: Sgt. Allister H. Coops d.5 May 1917 aged 41 yrs.