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Scientific Item Detail
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Item #

A3880

1890 Stephenson Steel Calculator Adder

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V020616

Price $

285

This is a seldom found 1890 Stephenson adder, calculator Model B made of Steel (magnetic).  Other common models were made of brass and brass with Nickel Plating.  The machine is pictured and described in the book “Antique Office Machines” by Russo and states it is a small cogged disk adder of the Pascal Principle, RARE”.  The front has a decorative trim around the two disks and on the back is stamped “A. M. Stephenson Company of Joliet, Illinois, AGENTS WANTED”.  Instrument is in good condition, operational with some scratches and slight corrosion that could easily be polished off, but would deter value.  Adder Calculates 1 to 99 with 10s carry over.  Size is 3.5” x 2”.   Machine will highlight any old calculator collection.

Photos and Descriptions Copyright Protected by New Beginning Antiques.

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