The roundel dagger evolves in the 14th century from the early knightly dagger of the 12th to 13th centuries, matching the evolution of full plate armor. By the 15th century, it had become the standard side arm for knights and would have been carried into battles such as the Battle of Agincourt in 1415. They were a knight's backup weapon to be used in hand-to-hand fighting and, as such, one of their last lines of defense. Since they were able to penetrate a suit of armor at the joints or through the visor of the helmet, the thinking goes roundel daggers could be used to force an unseated or wounded knight to surrender, for a knight might fetch a good ransom.
In the 15th century, the roundel dagger also rose to popularity among the emerging middle class. By the 1450’s merchants and tradesmen could be seen wearing roundel daggers at their waists.
In his combat manuals of the 1440's to 1460's, Hans Talhoffer includes numerous examples of techniques for fighting with the roundel dagger, both in unarmed combat and in single combat in armor.
The Roundel scabbard has an additional sheath for a stylish pricker which is included. The Roundels blade length measures 11 7/8 inches and total length measures 16 1/2 inches, width of blade near pommel is 1 1/8 inches.