We were on the road when this post originated, but I wish I'd been able to see that Craigslist entry, to see which unit was represented, because I keep records of most of the T1Ns that hit the market, the ads for which I'm able to access. If anyone sees anything like this again in the future and I can access the photos, I might be able to ascertain where and when that particular Interstate was REALLY sold.
Why my interest? In part because the photos of our 2007 Interstate were scraped from the original sales ad and have been used in scam attempts from November 2014 continuing up until present day. I can still find live sales listings for the vehicle we bought almost two years ago. Here's a blog post describing that process.
AN AIRSTREAM INTERSTATE SALES SCAM