I have tested this camera as much as I can, short of running an actual film through it. The manual can easily be found online via a google search. This camera was first produced by Ricoh in 1978.

Test results:

Shutter speed adjust: working properly, including 'B' setting.

Film advance: works

Shutter lock: works (when shutter lever covers red index dot, can't activate shutter)

ASA adjust: works, press button to allow to turn it, causes light meter needle to move

Cable shutter release socket: works (cable not included)

Flash hot shoe: works (flash not included), manual says its synched at 60, 8 and B shutter speeds.

Lens release: works

Film re-wind: works (there was a film in it, I had to remove)

Light meter: works (shutter speed adjust causes hole-needle to move mechanically, changing aperture or pointing at a bright light causes stick needle to move). Camera manual says you align both needles for correct exposure. Camera takes 2x AG13 cells (very cheap).

Battery compartment: clean inside

Film compartment: clean inside

Mirror: a bit of grime, but not bad.

View finder: quite clear image

On/Off: works (moving wind lever over, or away from, red index dot turns light meter on/off)

Film counter: works, resets to 0 if opening door.

Film compartment door: closes crisply

The only issue is a bit of corrosion on the outer surface here and there, as it is a metal body camera. There is a little light corrosion on the film door edge in one place and near hinge, see photos with pen, but I don't think this will affect use in any way.

Lens:

Very good glass front and back, a few specs but no significant issues. Better than photos make it look but I deliberately make the light catch everything I can when photographing a lens. It's kind of a semi-pancake lens. Aperture adjust works. Takes a 52mm filter (not included). Original press fit lens cap included. Smooth focus action with perfect resistance.

Original case is in good order.

Overall this is a solid workhorse camera with full manual control but a few less detailed options than a more advanced camera. You have slightly fewer shutter speed settings, and no self timer. Sometimes fewer options makes photography easier. I feel this would be ideal for someone getting into film, or to have as a cheap backup. Seems to have great build quality and has done well to survive working so well. Please check but I believe the lens mount is the same as Pentax K, just beware the pin problem if mixing ricoh lens onto a pentax:

from online:

"Ricoh cameras started out using the Pentax K mount, so early lenses are generally interchangable between Ricoh and Pentax. However, Ricoh later took the mount in their own direction, creating incompatibilities between them and Pentax. I don't know if anyone has documented all possible problems, but one that is very common is that Ricoh lenses whose type includes the letter "P" -- XRP, KRP, KPR, etc. (also the Tamron Adaptall mounts for Ricoh on which the Tamron adapter includes the letter "P") mount fine on auto-focus Pentax bodies, BUT WON'T COME OFF, because a lens pin that is unique to the Ricoh mount drops down into the autofocus hole on the Pentax body, and there is no way to retract the pin to get the lens off."