Hello,
A customer called me this morning about a portrait of her grandfather.
It's done in polychromatic lead - not charcoal or pastels. Someone had
told her never to photocopy or scan it because the light would cause
chemical changes in the lead and alter the image. I haven't seen the
portrait so I'm only going on what she said. I've never heard of this,
but that doesn't mean much. Can anyone advise on this?
Thanks,
John Marks
Geneva (NY) Historical Society
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