Are these Als?
Those look to be Al's. I've had them in my '71 for over a decade and they work great. I bought belt set from him for my 2000CS, too.
Those old Klippan belts should probably be replaced just due to age. In reality, these little cars fold up like a beer can in a bad wreck, but the belts can keep the steering wheel from crushing your ribcage completely. In this instance, safety of you and your loved ones should override originality...
Maybe reach out to Al over on FAQ, perhaps he makes a set using the crab claw Klippan buckle?
Ed Z
...no airbags, we die like men