More than 15 years ago, I was given some old rare books by someone who is now deceased. I've decided to sell the books, and will probably net $8K-$10K, perhaps more. The agent (a reputable firm) selling the books has made a point of saying they do not report sales to the IRS. What are the tax consequences? I have no paperwork associated with the gift, and no idea what their value was at the time I received them. Are the net proceeds considered a long term capital gain? I suppose I could not include it on my return, then if the IRS discovers the sale I could play dumb, which in this instance would not be far from the truth. I would like to know the correct way to treat this, however. Thanks in advance for comments.
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