I think if we can learn from history, without a doubt the value will increase. Its all about the hype and the story that goes with it. The PSA mis graded T-206 Wagner card will now become one if the most sod after cards in the sports market. It's appeal most likely will be to the wealthy who want to have it as a social statis item or a conversation piece!
Take a look at the coin market and the 1913 Liberty nickel. Most likey case was a mint worker restruck 6 coins with the 1913 year on it right before they destroyed the die. He waited 7 years before showing up at a couple of coin shows to display them. Then he marketed them by advertising a high amount of money would be paid if anyone that could come up with one.
Here is aquick story on it.
http://coins.about.com/od/famousrare...913_Nickel.htm
I'm sure there are other examples where the hype and story has made an item get record setting prices everytime it comes to the market. I think another item is a rare art painting that the UCLA library has on display. It was originally done from a husband to mock the art community because his wife's work was not accepted. This man had never painted before and hetried to make it the ugliest painting ever seen... Samething played out over the years with that item.
My guess for the price of the now trimmed (industry known) T206 PSA Wagner card is over 5 million!!! It most likely will be in the same holder tooas the "new" owner can decide what to do.