penny black stamp

I have a stamp that has a Penny Black (which should be rare) in the upper right Can you tell what this stamp is and how much is it worth? The background color is grey,the center is something blue circle with lines in it. In the middle, there is a dove with a piece of paper in the same peak and dove under the Small characters think hampfield said Sayd area and in London 20. bottom right says 35k plz help me! e-mail me magicalemily123@yahoo.com image. I'll try to send better deatial

American collectors that you identified by the number of 5877 or Russian 5878 Scott Catalog. In all cases, the value Currency catalog is $ 1.10, 75 cents, but no one is likely to offer both as a catalog for yours. value can display a full set of five stamps for sale (no sale) for 55 cents, to: http://stampwants-stamps.bidstart.com/Russia-5874-5878-CTO-/12195848/a.html To distinguish between the two possibilities must look very closely at the bottom corners of the Penny Black. It is a white square in each corner with a letter of the alphabet on it. If the letters are A and H, which was 5877. If V and K, 5878. The "circle of something blue with lines that" it is a world. These stamps were issued by the Soviet Union on February 15, 1990 by the 150th anniversary of the penny stamp, the first world.

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