A type of 16th Century "mini" sword combination of a Sword and Rapier. They were well tempered and flexible blade (a relatively new innovation). Popular with Medieval Navies, they were developed in the Basque City of Bilbo (hence their name - and no relation to The Hobbits!). A large number of them ended up all over Europe (used by Men-at-Arms). The Bilbo was a double-edged weapon, with a blade length between 25 to 35 inches long. They often had plain and unadorned handles and grips. Some versions had sword hilts (some did not).