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ECR Casebook: Detecting half-tone lithography on an obscured label.

Stradivari with a pinch of salt.

ECR Casebook: Tool marks from the antiquing process.

ECR Casebook: Crack repairs covered by a varnish that becomes opaque under UV.

ECR Casebook: High levels of carbon in printer's ink illuminated through the back of a violin at 850nm.