For me I'd check out the history of the flag,what campaign this was in during WWIi.Maybe some of marine buddy's who fought in it might want it of course.But I don't know that I woud charge anyone connected to it.Id and this is just me give it to them they probably went through hell to obtain it.if seen different military memorabilia over the years guns,uniforms etc...I would check with a historian.Maybe it was left to you because he entrusted it to you for some reason.