A rare item: the Orion Ring. This adapter, also known as a coupler, converts Contax-mount lenses for use on Leica screw-mount cameras.
It was the very first product developed by Akira Hagiwara, founder of Orion Seiki, the company that would later become Miranda Camera, in collaboration with Shintaro Otsuka, who was one year his junior at university.
The Orion Ring seems to have earned an excellent reputation at the time, but surviving examples are extremely scarce, and it has long been regarded almost as a legendary item.
Following the success of this coupler, Orion Seiki went on to release the Mirax, a compact mirror box for Leica cameras, and the Supreme 100mm f2.8, a lens with a 4 elements in 4 groups construction. After the prototype Phenix, the company introduced the Miranda T, Japan’s first 35mm single-lens reflex camera with a pentaprism, marking the beginning of Miranda’s history.
Reference: Classic Camera Senka No. 64, Genealogy of Miranda.

Beautifully finished in chrome-plated brass. There are some very fine signs of wear, but the overall appearance remains quite clean.
Fully overhauled in May 2026. The helicoid moves very smoothly. When a lens is mounted, the stopper lock feels a little loose, but it should not come off during normal use, as confirmed in our tests. As a precaution, we recommend keeping a hand on the lens when using it.
Rangefinder coupling accuracy can vary from one example to another, but in our tests there were no issues with coupling, and the results from actual shooting were also good.
Among the countless adapters made throughout camera history, perhaps only the Contax-to-Leica adapter made by Cooke & Perkins in England and this Orion Ring can truly be regarded as collectible items. A rare piece indeed.