Illuminator for the rangefinder of the Nikon SP, released in March 1958. The number produced is unknown, but it is believed to be very limited. Among them, fully working units are exceptionally rare.

When switched on in the dark, the lively viewfinder of the SP softly lights up, creating an enchanting and almost dreamlike scene.

Practicality aside, this is one of the most unique accessories ever produced by Nikon.

The item shows minimal signs of use and is in excellent cosmetic condition, which is quite rare for an accessory like this.
It operates on a single AA battery. Fully functional and confirmed to light up properly, projecting the viewfinder frame clearly.
One might wonder if it was ever practically used at the time, but despite its small size, it emits a surprisingly strong light—a truly mysterious little accessory.
A rare find.