Seconds are pieces that have minor cosmetic flaws! I don't sell any seconds that don't function as what they were intended to. Mostly these flaws are barely noticeable but for whatever reason they are not "perfect" and therefore they are discounted! These minor flaws are almost always thinner glaze application or little spots on the outside of the piece where the glaze didn't fully adhere known as "crawling". If you have any more questions about seconds feel free to contact me :)