I have a promotional Kabukiden wall scroll signed by Hiroi Ouji.
I have the PC-88 and one other version of the original Ys. I also have the IBM version, which seems ever rarer online.
I also have lots of other obscure Ys and Tengai Makyou items.
A couple different "brand new" Lords of Thunder t-shirts.
Three different Turbo promo videos.
Dozens of Turbo/PCE books, flyers and misc non-magazine items (plus lots of mags).
A real Sapphire and Turbo Magical Chase (
).
Original production art and rare prototypes for Mysterious Song.