your rarest piece of music?

It's not metal, but I have an Original Master Recording of Nirvana's "Nevermind". The CD is 24 KT gold plated ...
 
ULVER "Trilogie" Bergtatt, Kveldssanger & Nattens madigral picture discs

Waaahhh where did you get thessee???

Well...rare stuff...Okay I own some Underground Blackmetaldemons wich are kinda rare (50 up to 500 copies...) but nthing really famouse.Maybe the "Far,far north"-pic. EP of Einherjer-dunno if its "rare".

But the rarest piece of music that I really wish to own is the "Heimkehr" Album of the german Neofolk Band Orplid.They never sold any as far as i know...they only gave 50 of it to friends and stuff.I heard some songs of it...but never the whole (MASTER-) piece.
 
"maybe the limited edition of Visions from the Spiral Generator
maybe the preproduction demo of Vehemence - God Was Created"

Thanks for mentioning the GOD WAS CREATED pre Production demos, I have some rare shit. Like both
EMBRACED ALBUMS
- AMOROUS ANATHEMA +2
- WITHIN +2

GOREFEST- FALSE
RESSURECTION - EMBALMED EXISTANCE

Our first VEHEMENCE ALBUM, CALLED THE THOUGHTS FROM WHICH I HIDE WAS LIMITED TO 1000 copies. We have about 200 left now, we save them for tours though. That is pretty rare, we hope to repress it when we get to that selling over 10,000 lbum status, we have sold 6000 copies of that GOD WAS CREATED lalbum so far since its release in July 2002.
 
Cassettes... Deviated Instinct~Tip of the Iceberg & Terminal Filth Stenchcore demos, Paradigma~As Autumn Dies + demo
Oh ya~1985 Celtic Frost~Morbid Tales+2 tracks not available on European release(so it says).
All these have since been released so thier not actually rare accept their cassettes. NO BIGGIE.:)
 
Well I´m new to this forum (at least I think ) but I guess rarest item that I have is
Dark Tranquillity - Zodijackyl Light VHS..
I know at least few Finn who would like to have it on their collections..