i think its the gun i posted ill explain the gun to you as i have the original catalogue.the gun was made in obindorf and along that time they made the straight pull design also called the 66 which is now the blazer .the 77 was copied by the sauer 90 but has 3 lugs instead of the sauers 2 also the clip has two sides holding the mag rather than one,it is a very high end gun and back in the day they started at 1500 for low end small calibers up to 4000 for large safarie clibers.they use eaw mounts which remove easilly and return to zero . the gun is more sturdy than the sauer and shows. used sauer starte at 2gs plus thee 77 are collector,especially over seas europe.