since the image is on a black shiny surface and can only really be seen in all it's glory when viewed obliquely.
I think you'll find that your best bet is to photo copy the piece. You really need control over the direction and quality of light striking the image... something you can't do with a scanner. Years ago... way before I even dreamed of anything digital... I did a large quantity of similar work for a museum. If I were doing it today I'd shoot with some sort of high end digital capture device. The key to making it work well is lighting and the required setup will probably be unique to the particular type of piece that you're shooting. If you don't have access to appropriate direct digital capture, shoot film and send it to Richard for scanning. Working this way also is also probably the safest in terms of least likely to damage the original during the process.
Bob Smith
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