Just to clarify the progression of Suntour "Winner" family of freewheels:

1st: "Winner" opened from the rear (which I've never done) and had two notches for removal.

2nd: "New Winner" (bottom picture in [MENTION=113466]steelbikeguy[/MENTION] 's no. 15 post above) which had an adjustable outer race and two notches for removal.

3rd: "Winner Pro" has a gold retaining ring/outer race with reverse threads and four notches for removal. Also has special seals to help keep the bearings and grease clean from contaminates. "Winner Pro" in printed on the retaining ring.

4th: "Winner" (top picture in steelbikeguy 's no. 15 post above was sold at the same time as the "Winner Pro" but has a silver retaining ring/outer race and lacks the seals. Four notches for removal. "Winner" is printed on the retaining ring.

Hope this is helpful. Also just as an FYI, sprockets with splines from the "Perfect" and "Pro Compe" freewheels can be used in the last positions (two largest) on Winners, and the threaded sprockets from "Perfect" and "Pro Compe" freewheels can be used in the middle positions on the Winner family.