Thanks to John Stimson for the info. Had I not known better, I would have sworn from the pictures that those were made by H&R.
Sears and High Standard had a very close working relationship, and HS made many guns for Sears that they never cataloged under their own name, which makes research difficult. Further, existing cross-over lists are confusing, incomplete, and often just plain wrong.
In fact, HS became so dependent on Sears that Sears' decision to stop selling guns was a major cause of the ultimate failure of HS, along with high labor costs.
Those guns were utility hunting guns and, while of good quality, don't bring a high price. On the used gun racks, they rarely bring over $100. Today, bolt action shotguns are not popular and I don't think any are now being made except possibly the Savage slug gun.
Jim