NEWHAM'S ROTARY PRINCIPAL INTEREST DEMONSTRATOR.

Baltimore: E. Weber & Co. (1845?). Stiff cardboard folder, covered in brown woven cloth. Silver brad through center of rear board, holding the movable interest wheel (small tab to turn the wheel has been worn away). Paper wheel soiled & foxed; small ink blot at center near brad. Tipped in to front board are printed testimonials (torn in half lengthwise, thereby lacking parts of the text), dated 1845 & 1846, from bank clerks, lawyers & book-keepers testifying to the usefulness of the device. A hand-written date in the corner of the interest wheel reads Sept. 20, 1891. No listing OCLC. Item #30865

Price: $250.00

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