Nice find for me from a collector in Japan. The first detailed sales brochure from Japan that included the Pentamatic I and II. This page is from the accessories part of the brochure.
A very complete listing of the lenses available (and prices) for the Pentamatic series from late 1960 or very early 1961. These lenses were built for Yashica by Tomioka Optical at their Tokyo factory. The only lenses missing are the original f/1.8 5.5cm lens (for the original Pentamatic) and the f/1.7 5.8cm lens for the model II. I have in my collection the 35mm, the 135mm, the 55mm and the 58mm.
Finally (again) found proof that the Yashica Pentamatic series…
…of cameras were available in the Japanese domestic market. It had been speculated by some (including myself) that the Pentamatic was not available in Japan when it was released into the U.S. markets in the May-June 1960 time period. My reason was solely based on the fact that up until this point no Japanese language sales brochures or advertisements had been discovered during my research. I always found it rather odd to think that Yashica’s first 35mm single-lens reflex (SLR) camera would not be available in Japan. It is generally known that Yashica made the photographic press in the U.S. aware of the new model as early as late March 1960 when the Pentamatic made its appearance at a large photography trade show in St. Louis.
The elusive Pentamatic II in a Japanese sales brochure most likely from late 1960 to very early 1961. The brochure covers the new model II and its accessories over a full 12 pages. The selling price was 37,300 yen for the model II and 34,800 yen for the original model I. It also appears that the “new” lens of choice for this model II would be the f/1.7 5.8cm lens made by Tomioka Optical and displaying the name ‘Auto Yashinon’. I had suspected that the 1.7 lens was dedicated for the model II but had no proof. The model I Pentamatic came with the f/1.8 5.5cm lens which was also made by Tomioka in Tokyo.