Per Numista, there is no picture to post to identify this coin, so I posted pics.
It has a Numista Rarity Index of 100.
I have discovered one in some binders of coins from an estate auction.
If anyone has any idea of a realistic value to place on it, being as rare as it is, let me know your best guesstimate.
I'm also the owner of the 1858 Prov. of Canada One Cent with Upset Dies. Based on the October TOREX Auction estimate for the 1858 One Cent ($4K-$8K), is it reasonable to assume a similar value for Rarity 100?