Actually, it doesn't matter if Classic released a checklist with numbers, if the cards don't have numbers, they need to be NNO on this site.
Panini is notorious for issuing checklists with numbers and then issuing the cards with letters. When we discover the correct "lettering" of the cards, we use that for our checklists here. Same concept.
-- Dan --
Note: Please see my profile for more info regarding trading (section updated 3/4/2024). I have added a large portion of my inventory to the site, and currently have trading turned on (details are in my profile).