found this stuff on yahoo japan:



Gradius 2 - Famicom.
Seller says it has a debug menu and different graphics.
And maybe that it crashes later (im not sure about this as i dont understand all the japanese)


Seiken Densetsu 3 (Secret of Mana 2) - Sample Set
A white sample box, manual and cart. (Rom also says SAMPLE on the titlescreen)


Super Streetfighter 2 - Super Famicom
no further details known, might be identical to retail version.