British Airways Concorde - Rolls Royce Olympus 593 Engine vane

British Airways Concorde - Rolls Royce Olympus 593 l Engine Blade/Vane.
These blades came from Heritage Concorde and are in an unpolished condition exactly how they would have been removed from the aircraft. As these were interchangeable they likely were used onboard multiple of the BA or even AF fleet too.
Comes with certificate of authenticity copy as per attached photos. 
The blade arrived in a box of 5, sealed with the rolls Royce seal on the box as pictured on the certificate. 
Price if for 1 chosen at random.