Vintage Sansui Zougan Japanese Sliding Numerical Puzzle

This Vintage Japanese Numerical Puzzle displays the traditional Sansui Zougan (Mountain/Lakes) scene on the lid. 

Measuring approximately 3.7 x 3.7 x .5 inches this piece has aged well but we encourage you please view the pictures carefully.

Come with the original directions!

A very nice collectible piece of Japanese History.