Anvilus IX

Anvilus IX, also Anvilus Nine, was a Crusade-era forge that existed to stamp Land Raiders — including the Proteus — plus Anvilus-pattern backpacks and snub autocannons that fitted Astartes war-plate. Dark Mechanicum seized it in the Heresy and cut the loyalist Land Raider tap; nobody has a clean answer on whether the Imperium ever got the planet back. Jambonium's Ultima pin is low-confidence, so treat the marker as a named forge, not a surveyed system.