If the Pokémon Illustrator cards Pkonno sold thus far are all extra copies, there are 42 or more Pokémon Illustrator cards. Two are already mentioned in the Pkonno2002 Sales thread: www.elitefourum.com/t/pkonno2002-the-sales-data-for-snap-cards-trophies-archive/28304/1
And I think that thread is slightly behind, because in the comments they also speak of a third copy that Pkonno posted on Zenmarket; Jauce; and Yahoo Japan (which ended up selling on Yahoo Japan for 35M Japanese Yen).
Greetz,
Quuador