This is the Konica Auto S2 produced by Konishiroku starting in 1965. It was also sold in Konica Auto S2 adthe United States as the Wards am551. Along with a light meter, it has a fixed f1.8 45mm Hexanon lens and as the name implies, auto mode.

Regarding the light meter, the original battery was a PX625 mercury battery at 1.35v, which are no longer available. Knowing full well that the readings will not be entirely accurate this camera currently has a Duracell 625A (1.5v) installed. A more suitable option is the WeinCell MRB625 zinc-air battery.

This particular Copal-SVA shutter needed a bit of naphtha and exercise but is now working as smoothly as the day it left the factory.

Make Konica
Model Auto S2
Year 1971
Format 35mm
Shutter Copal-SVA
Speed B, 1, 2, 4, 8, 15, 30, 60, 125, 250, 500
Lens Konica Hexanon
f1.8 45mm
Focus 0.9m – ∞
Aperture f1.8 to 16
Light Meter Yes
Rangefinder Yes