This rare treasure is called the “Finger’s Calculator” hand made by Wilhelm Wlecke in Germany in 1919 and includes original operation directions in German.  It is estimated there were only five, 5, made and only three, 3, are known to exist today.  The design was based on all young children to adults in the early 1900s that used their fingers to count.  On May 3, 1919 Wilhelm Wlecke from Gutersloh near Dortmund Germany designed this machine and received the German Patent Number of 331979.  After opening handcrafted box, two, 2, hands with fingers each with enamel red painted can be moved up or down and behind there are five more white fingers to add or subtract.  One of these machines is in the museum in Gutersloh, the second with a private collector in Germany and this third, 3rd known original “Finger’s” calculator is offered.  It measures 16” x 6” x 10”, shipping weight about 10 pounds with insurance and made of painted wood and in perfect display and operational condition.  Each finger is 6” high.  The instructions are all in German and we’ve translated them to: “Some practical hints for using the Finger Rechenmaschine.  Please open lid in front.  Use the chain to bring the lid in horizontal position.  Arrange it in a way that the children cannot see lying fingers.  If you want to show white fingers press on the white keys, for red fingers press brown keys.  Press keys until you feel resistance!  If you want to subtract red fingers use red keys (hand jerks downward!).  To move down white fingers, use white keys (from the upper site - hand jerks upward!).  To calculate number up to 100: Use the book: Wlecke's Finger Rechenmaschine und Finger Rechen Einmalseinstafeln als Lehrmittel und für die Hand der Schüler.  This appears to be a book which illustrates how to embed the Finger calculator into a didactic concept and may have never been printed.  In our many years of collecting, this is the highlight to our collection.  This is truly a very rare calculating machine from 85+ years ago that belongs in a museum or with serious collector.