Help with translation of tanegashima

[Benji]

I picked up this tanegashima at a local gun show. Any help with the translation would be appreciated. Thank you 

[Benji]

[uwe]

Seems to be “國友膝兵衛” (Kunitomo Hizabei). Not sure about the reading of the red marked kanji of the name…

[Bugyotsuji]

Kunitomo Tōbei, famous line of Kunitomo gunsmiths. 藤兵衛

 

Unable to get anything legible from the lower lettering…

イ　十　生　ル　当 (曲)?

[uwe]

Dang, missed the strokes above….thought it are rust spots 😅

Thanks Piers 👍

[Benji]

Thank you for your help!