Thank you for your advices.
It's not cheap: The price would be around 2.000.
But I understand your thoughts and your skepticism.
As the seller is already shipping it to my friend I will take a closer look there and post some more pictures made by myself if I have it.
Coming back as soon as I have it.
Thank you!
My friend said he did bids for two swords and got both but only needs one. He also send me the link from the platform where I got the pictures from. The sellers has a 100% recommendation rate on the platform over years from user all over the world and offered my friend to get a NBHTK certificate if he wants one (regardless 1500 is too much or not). Why do you think his reputation is bad? The documents also looks pretty good in my opinion.
Maybe I should ask the other way: Does anything about the sword look fake to you?