I wasn't aware of an older version that threaded and screwed?
I don't know if that was the very first version but it is the first I have. I would be glad to post pictures if anyone is interested.
I read lots of posts where folks break the lever on all versions. I can understand that since they are not forged steel, but I have primed many 10's of thousands and never broken any of the parts. But I always make sure the contact points well lubed and never abused them by trying to prime an pocket that was crimped without swaging first.