In 1999 such an organ was sold in a Christie's auction. John Lattimer, an US urologist, became the new owner, having paid $4,000 for it. In accordance with his observations, the penis size was 4.1 cm, and "could" have increased to a maximum of 6.6 cm in lenght when excited).
4.1 centimeters = 1.61417323 inches
Ouch, and now we know the rest of the story.