See GNG01 for full details of the series.
This one has a couple of less-commonly used attributes - one or the other will apply, but not both. Please be certain that you can replace the cache before retrieving it.
In order to log a find here (indeed, on every cache!) you must sign the logsheet - it isn't enough to say that you have seen the cache. Any "finds" which aren't matched by a signature on the logsheet may be deleted.