They also have the LaVoix II.I just saw this thread... I think the Selmer USA site only did that temporarily. They list Selmer USA saxes as: SS, AS, TS and BS 500 and 600 Aristocrat...
They also have the LaVoix II.
Gotta love the ad copy for the LaVoix: "No sonic stones, no huge bells, no zebra finishes. These saxophones are all horn - no hype."
Let's see. That's a shot at Cannonball, possibly P. Mauriat (too), and LA Sax.
The 600s, as you mention, are stamped "Aristocrat". The 500s are stamped "Selmer".