Please post an image of the exact dial you are asking about so that we can properly answer your question.
Webb C. Ball was very specific about ownership - he patented everything. There were several lawsuits about infringement on his designs. Ball protected them vigorously.
Look carefully at pictures of Ball Dials that I have posted in the Ball Forum mentioned above. I do not post anything that is not authentic that is why I want to answer your specific question based upon the image to benefit you as well as others with the correct answer.
Posts: 10553 | Location: Northeastern Ohio in the USA | Registered: November 19, 2002