About 5 or so of the cards in my collection have all asian characters on them, the only thing I found on the cards that might help identify the name and their value is their numbers. Here are the numbers:

SK2-016
SK2-041
SK2-031
SK2-035
SK2-024
SY2-027


Are these pretty valuable?

Thanks in advance.

I cannot find any information online about the value of these cards, but I was able to turn up that these are cards from the volume 2 character ctarter decks (what was Kaiba Evolution and yugi Evolution when printed in english and other languages). You most likely will have a hard time finding anyone to buy those cards outside of Japan, with the exception of people who collect foriegn language cards. I would suggest perhaps putting them, as well as any other foreign language cards you may have, in a seperate binder from your normal collection and whenever you go to a trade show or such, ask around if anyone is interested in foreign language cards. I will keep a look out for any other information about the value of these cards, but until then I hope this information helps.