W-Nikkor·C 35mm f3.5 with MIOJ engraving. Marked Nippon Kogaku Tokyo. This lens belongs to the series following the 612 test lot and is assigned to the 910 test lot. As indicated by its serial number, this particular unit was the 9th manufactured in the 910 batch—resulting in an exceptionally rare four-digit serial number.

It was produced during the Nikon M era, and is estimated to have been manufactured in 1949. Approximately 1,800 units were made in the 910 series, including Leica screw mount versions.

The MIOJ marking (Made In Occupied Japan), indicating postwar Allied occupation production, is discreetly engraved around the rear element. From this 910 batch onward, the aperture ring direction was standardized to match that of typical Nikkor lenses.

This lens features a 3-group, 4-element Tessar-type optical design with early light coating. The minimum aperture is f16, and the closest focusing distance is 3 feet. As expected, distance markings are in feet. The lens weighs 190g, measured without caps or accessories.

An exceptionally rare piece.

Well preserved with minimal signs of use, this piece clearly shows it has been carefully stored over the years. It is hard to believe that 76 years have passed since its manufacture, as the exterior remains remarkably clean.
Fully overhauled in June 2025, the aperture and helicoid now operate with impressively smooth action. Rangefinder coupling is also spot on.
The glass is crystal clear with no haze, and only a faint cleaning mark visible under a loupe on an inner element.
The included front and rear caps are period correct, made of thick metal with a dull chrome finish that gives them a solid, weighty feel.