Knives and daggers

A Dirk is a long thrusting dagger, invented in Scotland at about 1600 A.D. and was used usually during naval battle.

Dirk

A Cinquedea is a long dagger or a short sword. It is was most popular during the Italian Renaissance period around 15 and 16 hundred A.D. It was usually around 18 inches long.

Cinquedea

Sai

A Sai is a small three pronged dagger used mostly in Asia around 1688 A.D.