Those brown bits evenly spaced around the top? Looks like the growing point was damaged slightly. The fluff between the marks and the tip looks whiter and more fluffy, is that this year's growth?

The scars are not so evenly spaced on top.They're not on every rib and not only at the top growing point.Some brown spots are at the mid-lower part of the stem as well, between the ribs.Not sure about if this is this year's growth as the plant was an e-bay buy...