‘Phenomenal’ images taken by VSC6000 uncover surreptitious stamp alterations

The VSC6000 detects a variety of inks, including optically variable ink (top right) and phosphor ink tagging (bottom right), both of which were added to the $5 moose stamp issued in 2003.

Relatively unassuming in appearance, the VSC6000 packs a powerful punch when it comes to philatelic expertization. Its high-resolution colour camera, zoom lenses and various light sources and filters – from ultraviolet (UV) to visible and infrared wavelengths – give the user an unparalleled power to see a stamp’s invisible features. “You get very consistent lighting in a dark environment, and it gives absolutely constant readings,” said Garfield Portch, president and chair of the Vincent Graves Greene Philatelic Research Foundation. Continue reading →

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