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Stamp for Aberdeen linen

Motor driven metal wheel with 30 rectangular slits attached to a smaller reduced speed cog and bell on a solid cast iron base. Small plate with "W. G. PYE & Co. Cambridge, London".

2 glass disks (1 large, 1 small) with darkened stripes to create a slit effect, able to rotate on metal handle with turning handle and pulley cable spindle. On wooden protective slip. Gives interrupted patterns of light
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