That is easily a $1200 gun on GunBroker, and could be a $1400 - $1500 gun.
As beautiful as it is, I think you are wise to sell it off to someone that will appreciate. If you used the money for something you really wanted, your dad would understand.
Trust me. I inherited a Ton of Neat Antiques from my dad. I sold most of them, kept what I really liked, and used the money as a Down Payment for my house where I live right now.
I inherited several guns from my Dad. I quickly snagged a few of the sentimental pieces for my Mom and myself. Then, I gave my brother-in-law his pick of the remaining guns. This is because my sister knows nothing of guns. Other than the few that I snagged for my Mom and me, everything was for sale or trade. Several years ago, when he asked me if I still had a Glock that he'd given me, I realized that I didn't have to stay attached to all of them. Once I decide on a fair asking price I'll start putting feelers out for the right buyer.