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One of two large gray metal boxes with a large number of sockets for plugs, some labelled as potentiometers, and a Voltage dial. Labelled on front in inscription. Complete with power cables.

One of two large gray metal boxes with a large number of sockets for plugs, some labelled as potentiometers, and a Voltage dial. Labelled on front in inscription. Complete with power cables.

4 anamorphic drawings on circular sheets of waxy paper. Small hole in centre of sheets:
1) Bird of paradise in blue, red and green.
2) stork in black and white with red beak and legs and green frog in its mouth
3) diagram of four overlapping…

3 anamorphic drawings on circular sheets of paper. Small hole in centre of sheets:
1) black and white drawing of 8-pointed star with radii
2) similar too above but on different paper
3) geometric design, black and white with grey and green shading

Anamorphic drawings. Four coloured drawings on paper discs with a tall curved mirror placed at the centre: a butterfly, a man on a horse, a bust of a man's head, and two men arguing; the drawings appear normal in the mirror but are stretched out and curved on the paper.
A hemispherical polished speculum cylinder mounted in a wood pillar case with brass small handle. Tin-plate storage case. Ivory maker's plate inlaid into pillar. Accompanied by a selection of early 19th century anamorphic drawings.

6 anamorphic…
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