Watching it all go down, I was quite stunned at that outcome. I figured it would go sans vig in the 4s at a minimum. When I pulled auction data back in June 2011, a lettered version of this was not in the database. Maybe this is the first one up for auction? I did notice the listing you linked to above. Seems stiff, especially when the same store is selling the numbered version for $1125 which is right down the abe middle.
I always thought a lettered version of this book was unattainable. I have a numbered version I should probably part with now.