I wouldn't call it a version, rather a slight customization - front sight, stock and bluing of an original. One thing Winfield often did in sporterizing the Johnson was to trim the top of the receiver where the rear sight was attached, then add a receiver sight (Lyman, Redfield, etc.) or a scope. I've also seen pictures of a one-piece stock. Parts are available in the states, although not as easy to find as five or ten years ago.