The Handbook of Industry (1873) states that the firm of G. Noack was founded in 1820 four yearsearlier than the following advertisement from the 1890’s. The handbook also states that the firm was operated by W, Schwerin after 1860.
On Dec. 4, 2009 the Rock Island Auction Co. sold a 48 caliber percussion full stock rifle made by “G. Noack-Berlin”. The barrel length was 26 inches. The following image is courtesy of the Rock Island Auction Co.