What colour is the frame? If it's one of the pairs that were released during the first few waves of the Holbrook, it's typical for Oakley to not have any printing on the frames. I've owned many pairs - from Trevor Andrews Frogskins to Chantry Hijinx to Polished Black/24k Holbrooks - that came with no printing on the earstems when it was initially released but had printing later on. They've become more consistent with that nowadays (ie. they'll have printing on all releases), but back then it was normal to not have anything on the earstems.