Anybody that can identify this Japanese knife?

[RD_knives]

He all,
Got this nakiri that i want to rebuild and make nice again only first wanting to know and see by which company it was made.
Thnx

 

[KenHash]

He all,
Got this nakiri that i want to rebuild and make nice again only first wanting to know and see by which company it was made.
Thnx

Need a clear straight on photo of the Kanji.
But from the crappy ones you posted I'd guess its Sadatsugu 定次 but badly worn away.