[COLOR="Navy"][SIZE="1"]Slingerland built and moved from Chicago to Niles during 1960. Even after they were settled in the new Niles plant, they continued to use up their supply of Chicago badges. Slingerland began using the new Niles badges (which at first had no serial numbers) in the spring of 1961. The first drums with the Niles no-serial badge typically have shell date stamps of "MAR 1961", and mostly "APR 1961".
Please feel free to visit my badge page on this site:
http://www.vintagesnaredrums.com/drcjw/article_1_badges.html
The work is the result of extensive multi-source research coupled with substantial personal experience as a life-long Slingerland drummer, so I am confident the information will help you.
Now a comment if I may on research. This is a process of learning, and the process, fortunately, never stops. That's the fun of it all. John Aldrich, Harry Cangany, and Rob Cook have all written fine books on vintage drums. However, each of these books has many errors in them. It is a reality. We all learn more every day. Even Rob's updated version of "The Slingerland Book" still has many errors. But I personally love the book just the same. It has fantastic information and is a celebration of Slingerland.
Much of the reason I decided to start writing here on David's site was to help sharpen, with continual web updates not possible with a single published work, information on Slingerland for all of us, based on my own research and knowledge. At the same time I also am writing a book, and despite the voluminous research, preparation, proof reading etc, I have no doubt that there will still be some errors that will have to be corrected in later versions.
Mike - greatly looking forward to your book. I assume there will be lots of pictures of all those fantastic drums you have![/SIZE][/COLOR]