Harmony Pocket Puzzle Book Made of solid brass with

Made of solid brass with carefully selected stainless-spring steel leaves (for rigidity and corrosion resistance)

Four heavy steel pieces interlock to create a modern masterpiece of mechanical puzzles

The Eyes of the Skin is a must-read for all architecture students

Each signed Moscovich Harmonogram is unique in the truest sense of the word

Harmony Pocket Puzzle Book Made of solid brass withThis shimmering take apart puzzle is perfect for any music lover. The golden G clef and silver eighth note seem hopelessly intertwined. Noisy jangling will not coax them apart. A series of carefully orchestrated movements is required to separate the pieces and in this case, the solution is just as elegant as the design. Designed by Dmitry Pevnitskiy and Kirill Grebnev of Russia. Manufactured by Hanayama of Japan.