This coin is a one-of-a-kind! (Sheldon-wise, that is.) There's only one variety from 1806, and this is it. Not scarce, but hard to come by due to date demand. This present example, the second I've owned, was an eBay purchase.

The first example I owned was found at the Biloxi coin show, 3/17/2001 (on my daughter's 1st birthday. I hope my wife has forgiven me for that by now.) The obverse had some very minor pitting.