I saw one of those but with a 12 string on top...
Definently an S series.
I saw one second hand for AUS $1200 (approx $700US) around 8 or so years ago. It was in good condition too. But back then I was a school student with no income and could not persuade my dad to spend that much money on something he thought was a waste of money.
If I saw one for that price and in the same condition today I'd buy it in a heartbeat.