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Most model J comptometers had a problem with the light-coloured keys, which resulted in a 'weeping' or 'bleeding' of the composite used for the dark lettering. Fortunately the keys on this model are in excellent condition.
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Most model J comptometers had a problem with the light-coloured keys, which resulted in a 'weeping' or 'bleeding' of the composite used for the dark lettering. Fortunately the keys on this model are in excellent condition.
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