Hello. I could use some help with the extra kanji on this sword if someone has time to take a look.
Thank you!
--Matt
Update:
All 1944 blades that I have photos for (5 of eight) have the large Saka stamp on the nakago face. The only 2 dated blades I have with the Saka + number on the mune are both in 1943, a Sadakatsu and a Zuiho. All 8 Nagamitsu blades with the Saka + number on the mune are undated