Sears 2000ES

This seems to be a screw mount AUTO camera.  Seems to be similar to the alpha SI2000 ?





Note the AUTO setting on the shutter and 1/2000

The below text as taken from the site

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A few cameras  ingeniously were able to use ALL 42mm lenses for full aperture priority exposure. They did it by taking the exposure reading  just after the lens stopped down, and just before the shutter opened.  This rather short list is useful if you are searching for a convenient AE body for your screw mount lenses.  The ones  I know about are:

The Chinons offered advanced features such as motor drive, radio control, intervolmeter, and a very advanced Data Back.