Are truly *unique* items possible in 7D2D as it is now?

[FramFramson]

Basically, is there a way to for a check to be run before a particular items spawns, making the spawn conditional on that weapon not existing as an item on the server already?

Not really a make-or-break goal, but I'm curious if there's a way to make this work which isn't too insane or code-intensive?