of a specific cleaning procedure preserving the silvered layer of the counterfeit coins. The analyses were adapted to the study of the official and counterfeit coinages. For the official coinage, the fineness was found to be between 12 and 40 % according to the mint place. These results are in agreement with the official values mentioned in the literature. For the counterfeit coins, the analyses were able to bring to light three different elaboration processes : amalgam with two various contents of mercury and leaf or electrochemical coating.

Abstract— We developed a 560 × 960‐pixel 2.2‐in. AMLCD with a 46 × 50‐μm pitch and amorphous‐silicon integrated drivers. This display is intended to be used as a light valve in high‐efficiency projection systems for consumer TV. It operates at a line rate of 32 kHz in progressive scanning and an equivalent video rate of 36 MHz. It can stand high illumination intensities and achieves a good aperture ratio with a high contrast.

In the frame of the EC IST

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