Where To Buy Used Early North Korea Stamps?

Hello,
i am very interested in used early (1949-1955) North Korea stamps, but market looks very poor for them. I found some of them but, 60% was reprints and 39% was unused.
Do you know some stores which can sell them?
I think in China, South Korea, Russia or Japan stores can find some of them. If you know any, please give me know ;-)
Thanks

P.S. If you have some of early NK stamps in your collection, I will like to see pics :-)

Try Michael Rogers Inc. in Winter Park, Fl

Please note that the laws state you can not important anything related to North Korea since the embargo in the US. Of course this isn't enforced, at least not that I know of but still better to be safe then sorry. Except here in Canada. We can buy Iranian stamps as well :D Tough luck america.

thank you for replies :-)
I am from central europe so I can buy stamps which I like
I heard about this embargo yet, it is sad that people are not free to buy stamps, coins or cigars which they like :-?
I believe that NK don´t have money for nuclear bomb because I bought stamps from them

The Stamps of Most embargoed countries Can not be imported into the US. But, any that find their way into the US as postage are fair game.