@ Teyon

As usual, nice work, the blade shape reminds me of a Gurkha Knife, or some of the ancient weapons like the Falcata, 

Khopesh or Kopis... more typically found in ancient Greece or Egypt.

@Vilters

Weapons with a forward curved blade like this were actually fairly common in ancient times. In fact the Gurkha Blade is still in use as a standard issue to Gurkha Troops in India and Nepal amongst other places that employ them. The idea is that with a heavier and forward curved blade a warrior could inflict massive amounts of damage when the weapon was used for chopping or slashing attacks, delivering wounds similar to those caused by axes but with the lighter weight of a sword which is also easier to carry... also many weapons, specially smaller daggers were designed to be blade heavy for throwing where the extra blade weight makes the weapon more likely to impact blade first. Many weapons of this type were favoured by Cavalry units where the heavier blade could be employed during hit and run attacks against armoured infantry...