Limited to a production of 50 APs each, this set is unequivocally comprised of the most distinguished, powerful, and valuable artifacts in all of magic.  The earliest mtg artist proofs and only proofs printed for Alpha, Beta, Unlimited, Collector's Edition, & International Edition.

The entire print run being 363 individual cards x 50 of each: 18,150 cards
Alpha had a print run of 2,600,000

Fun fact: The first set of artist proofs are 143.25 x (one hundred and forty three times) rarer than Alpha.

If you want to assemble a P9 set of greater rarity than the one pictured in this listing, you will need to source the one of the kind original artworks.