Mauser K98 scope base help. Identifying a mount.

[Yustax]

Hello, I bought a BYF 1941 with a duffle cut that I am planning to restore. However, the receiver was tapped and drilled for a scope mount. The 2nd piece was tapped for a 2 hole scope base...but the rear of the receiver was tapped for a 3 hole base that for the life of me, I cannot identify and I need some help to see if it is something vintage. Thank you.

 

[44 AMP]

No clue, sorry. It is possible that the rear bridge was not tapped for a 3 hole scope base, it might have been tapped for a receiver sight, AND a scope base, one sometime after the other.

 

[Wyosmith]

I think that's one of the old Styth mount patterns.

 

[Scorch]

Possibly the old Lyman pattern?