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Excerpt from Album Weeds, or How to Detect Forged Stamps I have always, when possible, avoided attempting to describe any forgery from comparison merely with a single genuine speci men, lest I should mislead my readers; and, through the kindness of some of the above-named gentlemen, I have been enabled to compare numbers of specimens of the rarest stamps, which are seldom found, except as forgeries, in ordinary collections. About the Publisher Forgotten Books publishes hundreds of thousands of rare and classic books. Find more at www.forgottenbooks.com This book is a reproduction of an important historical work. Forgotten Books uses state-of-the-art technology to digitally reconstruct the work, preserving the original format whilst repairing imperfections present in the aged copy. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in our edition. We do, however, repair the vast majority of imperfections successfully; any imperfections that remain are intentionally left to preserve the state of such historical works.
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Written by the prominent art and artifacts scholar Cycleback, this book is a primer and survey of standard methods and issues in the identification, authentication, fake and forgery detection of art, artifacts and collectibles, from ancient artifacts and famous paintings to antique toys and trading cards. Topics include stylistic and historical analysis, scientific testing (including radiometric dating, thermoluminescence testing, spectroscopy, microscopy and artificial intelligence analysis), basic research methods, material and process identification, provenance, altered forgeries, the limits of science and analysis, and more. Authentication involves many aspects and perspectives working together, from nuclear physics to art history, and this book is written for all those invested or interested in the topic, including museum workers, scientists, historians, students, appraisers, lawyers, collectors and those simply interested in how famous artworks and relics are authenticated and forgeries identified.
"Views differ on bitcoin, but few doubt the transformative potential of Blockchain technology. The Truth Machine is the best book so far on what has happened and what may come along. It demands the attention of anyone concerned with our economic future." —Lawrence H. Summers, Charles W. Eliot University Professor and President Emeritus at Harvard, Former Treasury Secretary From Michael J. Casey and Paul Vigna, the authors of The Age of Cryptocurrency, comes the definitive work on the Internet’s Next Big Thing: The Blockchain. Big banks have grown bigger and more entrenched. Privacy exists only until the next hack. Credit card fraud is a fact of life. Many of the “legacy systems” once designed to make our lives easier and our economy more efficient are no longer up to the task. Yet there is a way past all this—a new kind of operating system with the potential to revolutionize vast swaths of our economy: the blockchain. In The Truth Machine, Michael J. Casey and Paul Vigna demystify the blockchain and explain why it can restore personal control over our data, assets, and identities; grant billions of excluded people access to the global economy; and shift the balance of power to revive society’s faith in itself. They reveal the disruption it promises for industries including finance, tech, legal, and shipping. Casey and Vigna expose the challenge of replacing trusted (and not-so-trusted) institutions on which we’ve relied for centuries with a radical model that bypasses them. The Truth Machine reveals the empowerment possible when self-interested middlemen give way to the transparency of the blockchain, while highlighting the job losses, assertion of special interests, and threat to social cohesion that will accompany this shift. With the same balanced perspective they brought to The Age of Cryptocurrency, Casey and Vigna show why we all must care about the path that blockchain technology takes—moving humanity forward, not backward.
A page-turning novel that is also an exploration of the great philosophical concepts of Western thought, Jostein Gaarder's Sophie's World has fired the imagination of readers all over the world, with more than twenty million copies in print. One day fourteen-year-old Sophie Amundsen comes home from school to find in her mailbox two notes, with one question on each: "Who are you?" and "Where does the world come from?" From that irresistible beginning, Sophie becomes obsessed with questions that take her far beyond what she knows of her Norwegian village. Through those letters, she enrolls in a kind of correspondence course, covering Socrates to Sartre, with a mysterious philosopher, while receiving letters addressed to another girl. Who is Hilde? And why does her mail keep turning up? To unravel this riddle, Sophie must use the philosophy she is learning—but the truth turns out to be far more complicated than she could have imagined.
Alphabetische Liste nach Ländern, früher publiziert unter dem Titel: Vade-Mecum du spécialiste en timbres-poste d'Europe (1927) und Vade-Mecum du spéclialiste en timbres-poste hors d'Europe (1929).