I haven't had any experience with any of the major auctions. Most of their stuff is way outside my budget, and what isn't is in big lots so it's still too much.
I've done well at small places and online though, especially with poorly described items.
The mismatch would bother me more than its being offered 3 times in 6 years. Some people move stuff around as better stuff comes up.
Even assuming I had it, I don't think I'd spend 2K+ on something that's a bit of a puzzle. For that sort of price the research should already be done and done correctly.
Now if you find out it's a different year, maybe a more important year, that would be different.
Steve B