Dave -- I didn't know that Anna Nicole Smith or Michael Jackson were wilderness canoeists.
This thing's been listed since October. The listing was modified 41 times in October, and another 10 times since then. The "buy now" price was modified 7 times in October, and twice since October, with the last modification just before !:00 today.
I don't know the price history of this thing (except for the change from asking $12,000 to $49,999 today), or specifically what the other 50 changes in the listing were.
If it is true that this is a very early pack, or a prototype pack, it might have some extra value for the Duluth Pack company (although the company apparently was not interested in buying it at whatever price the owner wanted), but otherwise I wouldn't think that it's value as an antique would be more than a few hundred $$$, if that. But then, the seller does offer free shipping!
Looking at his feedback. the seller seems to usually trade in leather jackets, bags and packs, and various boots and shoes. Antiques do not seem to be his usual thing.
It seems that something quite hincky (or worse) is going on with this listing. It is very unusual to raise the selling price (by a factor of 4!) for something that has been unsuccessfully listed for the better part of a year during a depression.