Guild Wars 2

I understand for any particular race, you need 6 unique armor types (headgear, shoulders, chest, gloves, leggings, boots) from each tier for the complete 18/18.

Well I have checked more than a handful of times now with my Asuran Specialty Armors and I am still stuck at 17/18.

I have purchased:

Full T1 light armor set
Full T2 light armor set
T3 light helm/chest/legs/boots
T3 heavy shoulders/gloves

However, I am still at 17/18. Anyone know the issue here?

Issue solved. Here was the response from reddit that helped me.

Have you finished your personal story? At one stage, I believe, you get offered one piece of T1 cultural armour as a reward for completing one of the missions. I have the chest skin unlocked for my sylvari but it didn’t count towards the collection total (i.e. after buying the other 5 pieces of T1 I’m still stuck at 5/18 instead of 6/18). I believe it’s a bug because you didn’t actually buy the armour from the armour specialist.
EDIT: Here you go. http://wiki.guildwars2.com/wiki/Arborist_Coat_ Selecting the reward from your level 20 personal mission will unlock the skin but not give you progress for the collection (I’d say it’s the same for every race) so you should try buy the T1 chest skin from the armoursmith.

Purchase any of them with glory when they were still available through that way?

No I never purchased any with glory ever. Did not even know you could.