tested with batteries, appears to be fully functional. 

glass very clean, free from scratches and haze.

sold as is.

Lens: Color-Yashinon DX F1.7 40mm;
Construction: 6 elements in 4 groups;
Minimum focus: 2.6 ft [0.8 meters];
Angle of view: 56 degrees;
Shutter: Electronic shutter with continuously variable speeds from B [Long Time to 30 secs] to 1/500 sec.;
Exposure Control: Fully automatic electronic exposure control, aperture priority from F1.7 to F16;
ASA range from 25 to 800;
Red and Yellow Exposure Indicator Arrows visible in the finder and on camera top;
Battery check lamp doubles as exposure counter illuminator;
Battery: use two 1.4V batteries [Eveready E640N, Mallory PX640, or equivalent];
Filter: accept 52mm screw-in type filters and 54mm slip-on type lens shade.
SIZE & WEIGHT 123 X 75.7 X 64mm; 580 grams