Help with ID of M1922 M1 22 caliber scope base.

[98src]

Before listing this M1922 M1 NRA sales rifle for sale, I am hoping someone will know who made this side mount scope base so that I can include it in the description. I have exhausted all of my internet skills without any suc1922 m1-10 (1024x768).jpg1922 m1-9 (1024x768).jpg1922 m1-1 (1024x316).jpgcess.

[Johnny P]

It looks like a Griffin & Howe scope base.

[98src]

That was my first choice also, but it doesn't have the notches or their name.