help about different disk releases

[vampirehunterB]

hi.

I have always wondered about the differences between the famicom disk variations. Are there any differences between this and the yellow disks? this one is castlevania II Simons Quest.


Also, is this white disk an original prototype? 




Thanks alot for any help!

[P]

This article http://famicomworld.com/workshop/articles/the-holy-grails/ tells you all about the blue disks (read the introduction part). That one you have there has been rewritten with Dracula II. Dracula II was never sold on blue disks as you can tell from that article.

That white disk says Kaihatsuyou Disk Card (Development-use Disk Card) and it looks legit to me http://famicomworld.com/workshop/tech/nintendos-development-disks/. Is it yours?