The Tower type ’45’ camera was a screw mount Leica clone built by Nicca from Japan. It was sold exclusively by Sears in the United States, who commissioned cameras with their ‘Sears’ brand name with various Japanese and German camera manufacturers in the late 1950s and 1960s.
The second half of the 1950s saw the Japanese camera manufacturers face some difficulties in their production. Many of them (Canon, Nicca, Leotax, even the British Reid & Sigrist) had built their empires on copying the German design of the Leica IIIc. The Germans had lost their patents after World War II and the Japanese and other manufacturers had jumped on the opportunity to create their own versions of what had proven to be very well-built and highly effective cameras. But then, the Germans took the market back by releasing the Leica M3, which was a whole new level of camera and it was patented again too! The Japanese copy-cats were left lightyears behind.
But, they quickly figured out that Leitz had filed for a combined patent of all new features and had not filed the single alterations and improvements for patent too. And they set out to close the gap between their own (very capable!) models and the Leica M3.
And it got us some interesting developments.