Variants:
Richo Auto Half SE.
Richo Auto Half SL.
Built-in -selenium meter.
Riacho fixed-focus
lens.
f: 2.8 / 28 mm.
Seikosha shutter:
1/30 & 1/125.
Spring-wind moter.
Manufactured by:
Riken Optical.
Japan.
Year
of manufacture:
1960 - 63.
Size:
24 x 18
mm.
Film type:
135.
