The Seal of the P.O.S. is a non-mailable Item used in Rank 4. It is the membership seal of the Phantom Orchid Society. The Seal allows the user to click on Gated Garden Modules, but is not required to build the module. It is not necessary to acquire this Item to pass Rank 4, though it makes it easier to get through future ranks. The Blueprint can be obtained by mailing Phantomeme a Phantom Orchid.