Help with a Seki mei

[acoyauh]

Hello, forumers
Again seeking your assistance to help me read a sword signature. This one bears a Seki armory seal, so it's most likely a 'showato', but its manufacture is really beautiful.
I'm sorry for the diagonal pic, at this point it's the only one I can provide, since the sword itself has not arrived yet. I'll appreciate your help with the transliteration and pronunciation of the mei.

Thank you!

[Peter Bleed]

Dude's name was MASATSUNE. No idea who he was.

Peter

P.S. I'm also not sure of his family name. Amaike mebbe?

[acoyauh]

Thank you, Peter!

Masatsune Amaike, sometimes recorded as Amachi, is a Seki tosho alright, although later moved to work on gendaito, this particular one is Seki sealed, so probably an earlier work.

 

I appreciate the help, once I get a 'readable' name my research is much easier.