Please help with translation on sword.. opinions on whether its genuine or not appreciated..

[Johnbull]

Thanks for looking, hoping someone can translate these please.

Also uncertain if genuine, would like opinions.  Thank you John

 

[DTM72]

Dated 

Kyoho 6th year lucky day in 8th month. (1721)

 

Bizen Kuni Osafune Ju Sukesada Saku 

 

Yes, it appears to be authentic.

 

[Johnbull]

Thank you Dan C....