Marrakai:

The scope mounted on the Pachmayr, Howe, and Griffin & Howe sporters is a Zeiss Zielklein. They are a wonderful little scope, about 2.5X, usually with a post reticle. The "problem" with them is they are an elevation only scope, and therefore require a windage adjustable base. While this wasn't a problem in the day, they are few and far between now. Griffin and Howe, Echo, Jaeger, (and probably others) made them pre war, but they quickly went out of style as scopes like the Lyman Alaskan started to become widely available post war.

The Zielklein was used on both rimfire and centerfire rifles; they are quite robust and able to handle considerable recoil.

HTH