RPGaDay5: Most Old-School RPG owned

That, is a tough question.

Considering the first purchase I have made in approximately a full decade was the D&D 5th edition Starter Set, you could almost consider my entire collection "Old School."

The Bookshelf of Doom

In order to actually answer the question, I took time to sort my bookshelf by game.  Some books are currently missing.  In my car I have the SLA Industries HC MRB, Karma, Mort, Contract Directory and Cannibal Sector 1 books; along with the 4th edition Talislanta MRB.  Also included in the books currently in my car is Asylum, from Clockwork games.

The shelf is also devoid of any World of Darkness books.  First edition Vampire is in a 3 ring binder, along with Werewolf; the Werewolf Players Guide is in a box of stuff to get rid of.

Also missing is my Tales of the Jedi Companion, it was downstairs when the pictures were taken, and my 2nd edition Revised and Expanded Star Wars MRB is missing, that actually worries me.

There is also a box of boxed sets in my closet that I did not take the time to remove, because they will not fit on the shelves.

The oldest bits of my collection include: Space Opera (vol I and II), D&D red boxed set and Star Frontiers; all dated 1980.

A conundrum has produced itself...did I purchase Star Frontiers before James Bond?

The world may never know...