Great find OP. 

That's pretty much how I view it.If that's the case, I agree that gives them greater significance but I still feel the real value of medals is what they stand for, and selling them wouldn't necessarily be disrespectful towards that.
As I said, I wouldn't sell anything like that myself but if I'd fought in a war and then a century later, my great grandchildren were having financial difficulties that could be solved by selling the medals, I'd like to think I'd encourage them to as their wellbeing would be more important to me. It depends on the circumstances imo.