GC45CC has a placed date of 26/03/2002. You have found only one cache with a placed date older than that, GC2BA5. Therefore, the list is correctly showing the ten logs where the caches' placed dates are oldest.
Whether these lists should be showing ten logs or ten unique caches is another question. Your scenario is only possible due to the fact that you've logged the same cache at least nine times. For most cachers, with each cache only logged once, there's no difference.