So far as I am aware the vast majority of copies of Framburgs have been done by Superior (Alnavco). Framburg did not protect its copyright since it ceased production of the models after WW II, thus allowing Superior to use its models to cast their own revised versions. No doubt there may have been other small casters who made copies over the ensuing decades, but I am not aware of any large scale producer of Framburg copies other than Superior.

I also note that a number of the models, especially submarines but also several large ships, on the Sammelhafen list were never produced by Framburg, hence cannot be copies.