Information on this make is hard to come by...

These examples of this movement are marked "Sears, Roebuck and Co." and therefore the "Stellaris" name is probably owned by this large American Department store. My Westclox and Le Gant watches also carry the same movement but with different markings.

The movement appears to be very well made; probably manufactured for Sears, Roebuck and Co. by Ricoh, Japan. Access to the movement is through the acrylic crystal although there is a battery hatch on the back.

All have a crown between 2 and 3! They probably date from about 1973.