Hi g_day it is an dai katana with just the most beutifull hamon i have ever seen.
Just a pity it isn't mine (costs more than a small car).
I only collect katana's from the edo period.
But now i do astronomy i had to give up the collecting
Doing both is too expensive
It looks like this item is not for sale anymore
Havent heard from TomB at all.
It would have been a nice scope for imaging.