Westminster Blue Value Certificates

hi collectors before i say anything else i know what you're thinking as if a stamp could be worth 300 a thousand pounds and i thought the same but hear me out you see the stampin question is the world's very first postage stamp great britain's penny black and it was this very stamp that marked the beginning of the postal era making it not only an icon of british history but also britain's most famous and most reproduced inventions of all time you see before we use stamps letters are paid for by the recipient and the cost was calculated based on its distance that is until one day a school teacher called roland hill came up with a new idea he suggested a single flat rate postage stamp that was paid for by the sender and so the world's first adhesive postage stamp the penny black was born but here's the thing there were 68 million penny blacks printed in its nine months of production betwe