Toy History and Manufacturer Listings – Alphabetical Order K-Z **Note that text is copyrighted.  Please ask for permission to copy data.** Georg G. Kellermann Nuremberg, Germany 1910 to date Founder: Georg Kellermann Specialty: The company began manufacturing clockwork tin motorcycles and penny toys under the trademark C.K.O. C.K.O stands for “Georg Kellermann & Co.” It was … Continue reading Toy Makers K-Z