Just a little more info, since I got so many PMs... I am trying to raise cash for an investment property and if I can't, I will consider liquidating a part of my collection. About $15K worth.
Sorry for the disappointment, folks. I was able to get a big home equity loan at a terrific rate and my mortgage broker tells me that I can use this for an investment property. I won't have to sell my coin collection after all. In fact, I'm adding to it. : )