I gave my son the first gun I ever owned Monday, after Christmas dinner at my folks' house. I'd never brought it to my house in the nearly 30 years since I'd left home. Got it for my 12th birthday and my dad knows how much I treasure it to this day, but he thought it was time for me to pass it along. My dad mentioned a couple of cosmetic flaws that he thought I should fix for my kid.
Me "Well why didn't you fix them for me? It's been in your safe for 35 years"
Him "It wasn't my gun anymore, so if you wanted it fixed you should have"
Kid "I don't mind it just the way it is"
Me "It's yours now, if you want it to look better it's on you"
As long as he doesn't sell it while I'm still alive, I won't disown him for anything he does to HIS gun. Your gun. Treasure it in whatever way you feel is best. The next generation won't see it as your dad's gun, they'll see it as your gun. Do whatever necessary to make sure future generations get to enjoy it as much as you have.