When looking for the classicness of Tradeskill combines check a few things.
1. Does it exist in eqtraders.com Wayback Archives list of recipes
-These are often incomplete but if it's there, it's definitive proof it exists during that era. Pick a 2001 Wayback date. If it is not listed go to #2
2. Do any of the components in the recipe require components only available in later expansion.
3. When are the first postings about the item on allakhazam
4. What items are around its item ID on Lucy.
In this particular case, see #2.
http://www.eqtraders.com/items/show_...r=035000000000
Two of the sub-combines include Celestial Essence. This is only available in Luclin/PoP (Shadow Haven, Sanctus Seru and PoK). Therefore they are not classic.