Got it! My prize for participating in an e-chat with Diana Gabaldon HERSELF last month, as she promoted her new book, The Scottish Prisoner.
This is simply icing on the cake as I considered chatting with Herself a treat in it of itself. No it isn't signed, but that just gives me good reason to seek Herself out when she promotes "Heart's Blood" next year. Thanks BookTrib and Random House - you made my day!