From gum and centring to the paper trail behind record sales like the Z Grill and the British Guiana Magenta, here is how valuation really works. New to philately? This guide to the best stamps to ...
New to philately? This guide to the best stamps to collect if you're just starting out shows where a beginner's money goes further than fame suggests. A genuine Penny Black can be found from £375, ...
A 1-cent postage stamp from a 19th century British colony in South America has become the world's most valuable stamp - again. Sotheby's says the 1856 British Guiana One-Cent Magenta sold Tuesday at ...
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