New Paine letter? Thomas Paine to John Hustler, 12 July 1789

There is a letter from Thomas Paine to John Hustler, 12 July 1789
going to auction this Thursday, 17 December 2009, at Sothebys in
London, U.K. Click on the link below and wait a bit -- it takes a
while to load and then look at the fourth lot counted from the
upper left.

http://catalogue.sothebys.com/auctions/L09777/auction.html

The only mention I can find in the standard literature on Paine
is in Keane at p.587 and it appears, moreover, that this letter is
not included in any of the standard Paine collections. Your
comments solicited. Another big thanks to the ever alert Alaine Lowell
for spotting and sharing this.