The Dial Home Device for this planet was lost long ago. Archaeologists found fragments of it, and diagrams were used to create a copy on display in Cicero's Museum. Oddly enough, the fake DHD displayed the point of origin for Earth's Alpha Gate instead of P4M-328's true point of origin (which would have been on the original DHD the replica was based on). The planet's Stargate was a museum piece there as well.