The true value is as a family heirloom. Don't even think of selling it, your father should pass it on to you only when you're mature enough to respect his and your grandfather's wishes, and that's probably to pass it on to your son who will hopefully understand all this. This is definitely a safe queen. Pictures would be nice!
The biggest issue with assembling an AR isn't so much getting the parts together right - it's getting the right parts together.
US Army 1966-69, VFW Life Member, Retired Geek