Hi
Welcome to the Forum.
The next time you post a new question, you might think about starting a new thread rather than appending your question to a thread that is a few years old. This will give your revolver a clean slate for people to comment on and neither you nor anyone else will have to scroll through lots of old information.
Now, to answer your question, Your K-22 Model 17 was made in 1967. That would mean it is probably a Model 17-3, but it is possible it is a Model 17-2. If you open the cylinder and look on the frame in the yoke cut, you can find out for sure.