can you please tell me, this "postal union congress 1929 stamp" it is real?
by Lily Pang
Sorry, I do collection stamps, but I don't know the stamp value or history too much.
This stamp I had with me very long time, I just realize the cutting of this stamp seem different from other. So I'm not too sure does it still collectables.
I had send the photo for you to help me. I took both front and back.