Bought my '02 used with 1.2k for $6k back in '03 but it had almost every Triumph accessory.
That mileage should make for a great bike. I'd guess somewhere around $3,500 depending on the condition.
Pop some pix up if you can, that makes it easier to estimate the value.
Here's something to compare against - an '04 with 7,500 miles but a lot of accessories:
http://www.bonnevilleamerica.com/for...gonew=1#UNREAD
There are a few nice America's in the BonnevilleAmerica.com classifieds.
Btw, it is America, not American. I laughing because when I became interested in the line back in '03 I asked the same question and that was the first reply about a request for info. Made me laugh!
Good luck!