An early color photograph or image produced by the heliochrome process, essentially an original heliochromic image or print.
From helio- (sun) plus 'chroma' (color) plus '-type' (print or image), naming the actual photograph created by the heliochrome process.
Every heliochromotype is basically a museum piece now—they're some of the oldest color photographs in existence, and many have faded because the chemical process wasn't stable!
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