This is possibly the most iconic Medieval Rondel Dagger that exists, dating from the first half of the 15th Century. It is very heavily based on a piece in the Wallace Collection 

A very heavy hollow ground, single edged blade with a 14mm thick section at the hilt, diving down over the first 50mm to around 9-10mm thick. The massive rondels are, of course, hollow and each made from two dished pieces of steel. The slab tang passes through the handle, the edges are finished with decorated brass plates and the centre of the grip is finished with a brass flower shaped washer.

Grip length 10cm

Blade length 39.5cm

Overall length 52cm

Blade thickness at hilt 1.4cm

TC101