ghost guns, ghost money on Nostr: #[0] You can own/transfer them easily (relatively speaking) if it was registered ...

ZoroMonero (npub17r5…d8n4) You can own/transfer them easily (relatively speaking) if it was registered before May 1986, but they cost like $10,000-$50,000 (finite supply, a lot of demand)

Anything afterwards can only be transferred between/manufactured by SOTs