You can cut out the middle man. For $300 @ I'll tell you all kind of war stories. All guaranteed true. That will save you the cost and hassle of gun purchase.
My Grandpa didn't get more for his cottage, truck or RV because he was a decorated airborne combat engineer from WW2. I don't see how the story would bring value to an object that was made 35 years after the war ended.
No luger. Now if it was a 1911 the guy had while flying his bomber missions, that would make sense to me and add the extra value.