Enchanted Item Base Codes

How in the world would I find these? Is there a list somewhere?

if you mean the codes you put on your shop, hold the item and type /iteminfo

Note: Potions -- your potions will come up as Potionnumber), so you will also want to place a sign above your shop sign to specify which potion you're selling, not everyone knows the potion item numbers by heart. Other than that, apamment's post should help you. =)