Nikon S4
Appearance
The Nikon S4 was a rangefinder camera produced by Nikon that was very similar to the Nikon S3 but had a slightly lower price.[1] This was because it used a cloth shutter curtain (rather than titanium foil curtains) and it lacked the self-timer and motor drive lug of the S3.[2] The viewfinder frame-line for 35mm lenses was also omitted. In all other respects, the cameras were identical.
The camera had a short production run from 1958 to 1960 which makes it quite rare compared to the other Nikon rangefinders.