Seconds are products that have very slight defects such as uneven coating, slightly burnt glaze, etc. Please rest assure that this however in no way affects the usability of the product unless stated.
Seconds are split into grades which determines the amount and visibility of aesthetic flaws. You may refer to the images available to take reference to what the flaws might include (but not limited to).
AB - very slight / not very visible at 1 spot B - visible or at more than 1 spot C- pretty obvious