I am wondering if anyone knows when NBTHK first started implementing punched dates into their certifications of authenticity? I am currently looking into purchasing my first nihonto, and came across some interesting pieces at a shop in Kyoto.
After some discussion on reddit (full post here: https://www.reddit.c...d_would_really/), I am starting to question the authenticity of the pieces being offered, including one that is purported to have NBTHK papers.
The mei of the first sword, and the corresponding NBTHK origami, are found here: https://imgur.com/a/kNGKzih
The second sword is supposedly from *EDIT* the Yosozaemon Sukesada lineage, but does not come with any certification. While it is an absolutely gorgeous blade, I am skeptical as to why it isn't certified (especially given that Sukesada is a commonly forged name). The mei for this blade may be found here: https://imgur.com/a/4Lb4Ts1
My two asks of anyone with much more knowledge than I are the following:
1. The NBTHK certificate, supposedly from 2008, does not have a punched date in the top-left. Is this an indicator of a fake paper, or is there a chance that some papers wouldn't have the punch (despite me finding evidence online that punched dates were on the papers as early as 2000).
2. Does anyone have advice regarding how I could verify the authenticity of the Sukesada blade? On the Sukesada piece, my relatively amateur sleuthing of the signature seems to point at it being legit, but given the quality of the blade (unfortunately didn't take pictures of the full blade at the time), I can't think of a good reason as to why this blade wouldn't be papered if it is truly a Sukesada in the condition I have seen.
A HUGE thank-you in advance for any and all information you may have, it will help me a ton!