Irregular brownish-grey flat piece with the number 31 printed on it, resting on a pale grey surface.

Grey flat object with number 31 on a neutral background

A smooth, dull brownish-grey flat shape with irregular lobed edges rests on a pale grey surface, casting a soft shadow to the left. A small light marker and the number 31 are printed near its center.

Artist: American Manikin Co.
Date: [1890?]
Medium: Lithographs Wall charts
Source: Wellcome Collection
Size: 4000 × 2997 px

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Public domain · Wellcome Collection marks it Public Domain Mark; made by 1900.
Rights checked 2026-11-05 · tier A · as stated by the source: Public Domain Mark (Wellcome Collection)

Credit (appreciated, not required for public-domain works): Wellcome Collection

19th century 1890s medical illustration lithograph museum object wall chart anatomical figure american manikin co.object photograph detachable parts flat object grey