This vintage medical model of a human penis is up for auction on eBay right now. Manufactured by Carolina Biological Supply Company (still a wonderful company), circa 1950s, the model is 22.5" long and 15" tall. Starting bid at just $275. Link (Thanks, Michael-Anne!)
UPDATE: If you thought that penis head was a bit pointy and odd looking, you were onto something. Dr. Matthew Vaughn says: "Unfortunately, the 'male penis' model is actually a model of the root tip of a modern vascular plant. Now given the Australian slang for a quick romp between the sheets (a root), BoingBoing's posting isn't ALL that far from the mark, but it is, nevertheless, factually incorrect."
