Copper plate: Sketches of Heads [138] (verso)
![Copper plate: Sketches of Heads [138]](../images/platefull/PK104_02.jpg "Copper plate: Sketches of Heads [138]")
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Photo © The Hunterian, University of Glasgow (50287)
This is a digital image based on the copper plate. A scan of the copper plate was flipped horizontally, converted to greyscale, and colour inverted, with enhanced contrast.