I believe that the first ever made Holo and Dark Holo of each type of illuvial should also receive an espial finish #1 number. You can always look this up manually by searching for illuvials of that finish/stage/type and see which one is minted first, but I think the first ever made of each holo/dark holo should be worth more than the 1000th one made. First 10 should be worth more than the 1000th one too. First 100, should also be considered collectors items compared to the 10,000th one.
It's a collectors game. The more ways we can identify uniqueness and value among the collection, the more interesting and valuable our collections become. The more emotionally attached we are, the better. Adding these holo/dark holo espial numbers are a good thing--and should be rather simple task to add to the illuvidex.
EDIT: Sounds like the team is planning on implementing this soon actually!
