The prototype of this work was produced in 1983.
The structure inside and the mechanism are 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 structure inside and the mechanism are 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
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