A blacksmith from Ystradgynlais is making a replica of Welsh rebel leader Owain Glyndwr's sword of state.
The sword was sent to Glyndwr to mark his coronation in 1404
The sword is being made for the Machynlleth celebrations marking the 600th anniversary of Glyndwr's first Welsh Parliament.
The original was given to the warlord to mark his coronation as Owain the Fourth of Wales, and the founding of the first Welsh Parliament at Machynlleth in 1404.
The replica being made by blacksmith Jason Gardiner is an exact copy of the weapon sent by King Charles VI of France.
The 44 inch long sword which weights more than eight pounds will be unveiled for private viewing on 1 May at Cardiff Castle.
It will then be presented to Machynlleth Town Council during a four-day long celebration in June to commemorate the 600th anniversary of the first parliament.
"Wales does not possess symbols of statehood like Scotland does", said Sian Ifan, of cultural campaign group Embassy Glyndwr, which commissioned the sword.
"Consequently the 600th anniversary of the Welsh Parliament prompted us to think how best to mark this anniversary."
Swords have played an important part in Welsh history and mythology, including Arthur's famed sword, Excalibur.
"The Great Seal of Owain Glyndwr shows him holding a sword and we know the French king gave Owain a gift of a helmet, armour and sword," added Ms Ifan.
"So after some thought and discussion we decided to make a commemorative sword."
The sword is veing made in an Ystradgynlais workshop
The sword has been paid for by an anonymous Cardiff-based businessman for an undisclosed amount and it is modelled on the one Glyndwr wields on his seal.
"It is as historically accurate as we can produce without the cost becoming excessive," said Mr Gardiner.
"We feel this sword encompasses the Celtic spirit and heritage that made Owain Glyndwr an inspirational icon and the greatest of Welsh leaders."
The fully working blade is being forged by hand out of carbon steel.
The four-inch wide blade is hand engraved with the words 'Owain Glyndwr 1404'.
On one side of the cross guard 'Tywysog Cymru (Prince of Wales) 1400-16' is written while around the pommel there is the warlord's full name 'Owain ap Gruffydd Fychan'.