someonecompletelyrandom

We've had a few of these pop up in the past, but I thought I'd make an official one. Maybe even set up an index. What's the rarest record (album) you've ever owned? What are some other rare albums you've stumbled upon? To clarify, we're not talking about rare copies of well known albums in some dated or obscure format, we're talking albums that are rare because the music itself is hard to come by. These could be vinyls, cassettes, CDs, digital downloads.. Etc. they don't even have to be good, so long as they're rare.