How accurate is this certificate ?

[Jussi Ekholm]

Unfortunately I don't have time to write a long post.

 

I personally have no reason to doubt the old NBTHK paper. I think it could be very likely that the sword is genuine sword by late Muromachi Buzen Nobukuni.

 

About the tantō signed similarily, it is actually not owned by either of the shrines you mentioned in the post. It is actually Beppu City Bunkazai (City level is the lowest Bunkazai level), it is in private collection and located in Ishigakinishi in Beppu. And it was designated as City Bunkazai in 1972.

[Rayhan]

Allow me to impart a story of Hamon suffocated by hadori.

 

A few years ago 2016, I was in Osaka and went to see a Hirotsugu sword. The sword was clearly Hitatsura and had been polished badly and was presented in suffocating Hadori...oh my

 

I bought the sword, no papers. The sword was sent to a very good polisher to be done in sashikomi polish. 

 

After that it went from Hozon - THozon in the same sitting on to Juyo 2 years later. Hirotsugu Juyo is rare. 

 

If you study the sword, feel it has the suguta you think is correct and strong, etc then go with your gut and try. If you have even a single doubt, don't regret. 

[Robert S]

8 minutes ago, Rayhan said:

Allow me to impart a story of Hamon suffocated by hadori.

 

 

I'm seeing way too many of those polishes around - drives me crazy - gorgeous hamon over-written with "what the heck, something like this might look good" hadori.  Why. I ask, why?

[Bosco]

Thanks everyone for your information. Yes I need to learn more. Im purchasing 3 at the moment. I learned the lesson so 1 of them with that green paper and other 2 with NBTHK papers. Need them in hand so I can have a look at and study it.