I don't think they are exclusive to any region.. I believe one is available in London, and couple in the US as well... and maybe Tibet? (jk)
Here is a bit more...
Ms. VerniLover, I am speechless!
Congrats on those absolutely PRECIOUS Birkins. I believe I need to change my signature as you have single-handedly saved the US economy!
the other dust bag contains this one that I teased about in my picturebook thread!