Hello:
I had posted a sword on reddit and it was recommended I post here. I do not know anything about swords, however one of the users commented, "
Hmm. Markus Sesko's Swordsmiths of Japan lists three Kiyonaga who signed this way, active from late Kamakura to mid-Nanbokucho (late 13th–mid-14th century). To me the shape does not look quite typical for a blade from those eras though. I'd probably place it in the Muromachi era (15th-16th century), but that's a low-confidence guess. You may want to try posting this on the Nihonto Message Board for more qualified opinions.
Another user from a different board sent me this link: https://sanmei.com/c...239_S2834_PUP_E.html
Here is the sword, thank you very much.