David: I did not know your father but am saddened to learn of the passing of yet another of us long time collectors. I hope you will pick up his passion and join the collectors. If, however, you choose to sell the collection I suggest that you first have one or more people evaluate it and seek advise whether to sell in whole or piece meal. If you want send me a private post and I will be happy to give you the names of several professionals who can evaluate the collection.