Many overseas retailers (and those who bring them in themselves) that ship ISOM's to the US, will send them (or bring them in the the US) without bands, and often in domestic boxes ... and sometimes will send the bands seperately in an envelope by mail, to avoid customs intervention.
If they don't ... you have to band them yourself, so you can remember what they are ...
That is what is normally refered to as a 'rebanded' cigar.