I have that rifle. Steyr Mannlicher SSG Police Sniper Rifle, with Kahles ZF 69 6×42 scope. It all came in a package, including scope and mount, for about $400.00 back in the early 1990s when the Austrian Police switched to a more modern police sniper rifle.
Mine was unused (scope, too). Apparently it was in an Austrian Police stockpile that never got issued. Unbelievable deal. With factory ammo, I can keep them all inside four-tenths of an inch at 100 yards off a bench.
Amazing what kinds of deals occasionally make the rounds.