This amazing vintage abacus survived it's many years in Germany quite well. The wooden frame is jointed similar to dovetailing and the beads are made from a type of old plastic. The beads slide easily along sturdy metal dowels and the entire piece measures 7.25 x 4.75 x 1.5". It's an amazing piece of graphic art and is also very useful, if you like doing math the old fashion way that is. :) It came straight from Germany and will happily serve as a decorative item and calculator in any home.
If you have any questions, please contact me. :)