Hermon Hosmer Scott was one of the big names in the early days of HiFi and into the stereo era. Scott made a name for itself with their electronics, especially their tuners (Scott's first invention was a dynamic sound processor which deticked 78s so they could be played on air), and their tube stuff is still has very respectable performance (and the vernier tuning dials are cool as all get out). While perhaps not in the Marantz and Mcintosh realm (at least not in collectibility), it's close, and certainly in the same league as Fisher and Sherwood.
Scott also made a very interesting turntable, the 710, which used a cone shaped pulley, idlers, and a drum connected to a worm gear to create a variable speed turntable with a regular motor.
Scott's speakers were a side line for what was mostly an electronics company, but they benefited from that association since Scott was the first speaker maker that I know of who intentionally designed speakers with relatively uniform impedance, which made them easy to drive - I assume that Scott recognized that amps that aren't transformer coupled (like tube amps were) could have problems with low impedance dips. Such dips, which, in worst cases, can get close to a dead short, weren't unknown in speakers designed without awareness or concern for interaction with amps.
Keep in mind that these Scott speakers were coming out at a time when the market was practically owned by the big speaker companies - AR (which at one point had something like a third of the market), KLH, Advent, and for those who didn't care for the east coast sound, JBL and Altec. These companies had greater economies of scale, bigger advertising budgets, and were more likely to be chosen by people buying other name brand electronics. So as good as many of the Scott speakers are, they don't have the name recognition that equals collectibility nowadays.
HH Scott eventually couldn't compete with Japanese electronics, and was sold. Some of the subsequent owners have produced very good equipment, but some have not. Which muddies the waters.
By the way, be aware that HH Scott and EH Scott are two entirely different companies. EH Scott, who were out of the Chicago area, I think, was one of the top makers of radios in the 30s up to 50s, which usually came in large, luxurious consoles. They still have a devoted following, but shipping such consoles is ruinous - dangerous and expensive.
HH Scott was in Maynard, Mass.
One last thought: Scott employed Daniel Von Recklinghausen, a very talented engineer, who is the source of the immortal wisdom: 'If it sounds bad and measures good, it's bad. If it sounds good and measures bad, you've measured the wrong thing.'