Chris describes them correctly in the first post. He's asking about the 1st generation Smarthome Switchlincs with the green LED bar on the left side. They have a small set button on the right side of the rocker in the center and the air gap (disconnect) is accomplished by pressing hard on the bottom of the switch.
The next generation Switchlinc (before Insteon... we'll call it V1, 2nd generation), is similar but the little set button is gone to be replaced by a button on the bottom that is both the air gap (by pulling it out), and the set button (by pressing it in). These switches also have a little different style LED bar than the originals and in my experience tend to by much more reliable.
I can't help Chris with the ones he's looking for, but if anyone is interested in some or the 2nd generation V1 switchlincs give me a shout. I've got a number of them... some 600w, some 1000w, some 1-way, some 2-way (even a few that don't require the neutral). All are less than a year old and I'll have more soon as I replace with Insteon and UPB.
At my house these switches were 99.9 reliable (until I started installing Insteon switches

). I'm evaluating lighting controls for the business and know that I won't be installing any X10 so they're all coming out.
At some point I'll get them organized and listed on the For Sale forum...
Cheers,
Paul