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More model informationPanel 22 at Honanki. CR Allen 1893 charcoal “advertisement” photographed with DCorn 16mp digital microscope. 11 photos, not focus stacked. area of subject is approximately 9 mm across. Future attempts to include getting closer and focus stacking. This model and FS2277 strongly imply that the charcoal is being impacted by silica (possibly carbonate or sulphate?) precipitation. Charcoal lines are not continuous from lettering but where still present, some areas have light crystalline material superimposed. No obvious particulate dust.
Apr 19th 2023
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