http://t206resource.com/Proofs%20Gallery.html
Actually, looks like there's 3 proofs of Jacklitsch. The first of the two pictured on T206 Resource is different than the two pictured above.
They did print some multiples. As artwork gets reviewed and changes are made, they'd need more than one round of proof review.
Also, there's several players that have Type 1 & Type 2 cards of the same pose...see REA's latest auction. No name versus having name, and often the artwork is slightly different between the two.
But, alas, I have heard there's probably less than 50 total T206 proofs that exist still today, so still uber rare.