The prototype of this work was produced in 1983.
The inside structure and mechanism were completely different from those of the "Humibako D Series.
In 2001, the “Humibako D series” was produced and became more practical.
The mechanism has become relatively simple, but please do not make a mistake in the first move.
The inside structure and mechanism were completely different from those of the "Humibako D Series.
In 2001, the “Humibako D series” was produced and became more practical.
The mechanism has become relatively simple, but please do not make a mistake in the first move.
The other works of Akio Kamei
