In addition to a local dealer, you might try to find a local coin club. Most have internal auction. Go to a few and get some similar items selling price. Then put yours up. Most of my club auctions for wholesale, sometime less, sometime more. The local coin store will usually go 10% less. Good luck.
@Johndoe2000$ This is just my opinion, but I think Doug's (aka GDJMSP) suggestion is your best alternative. Chris
Ohh and to answer your original post question , in hell I'll keep it till my.munckin decides weither she wants to build it like a foundation or sell for college... Idealistically... But if must sell I'll wait till I'm on my death bed.. I'll die with a 1955 ddo type 1 in my grave Sent from my C6740N using Tapatalk