Is this a Masamoto knife?

Hi I am Lorenzo,
I am sure someone can help me.
I am interested in buying this used set of knives: i am pretty sure about the deba and the takohiki being from the Masamoto manufacture but I am not sure about the yanagiba (the photo with the wooden background and the one with dark blue background) Can someone help me translating these kanji?
Thank you for your time
Lorenzo

The deba (the left one) and takohiki (the right) are indeed made by Masamoto Sōhonten.

the third picture
登録 正本総本店
Registration Masamoto Sōhonten

However, the yanagiba (the center) is made by 吉兼 Yoshikane / 吉金刃物 Yoshikane Hamono Co.,Ltd.

the fourth picture
吉兼作
Made by Yoshikane