Well, it only took 9 days to get an answer! I'm thinking a 3 day maximum before an item is revealed. People lose interest if they can't get any hints and can't see enough of an item in an edited photo. The items are supposed to be recognizeable by a number of members, not something in a locked box on the back shelf of an EOD center behind a chainlink fence on a military base that isn't on a map. No one will ever encounter this item in their daily routines.