This papercraft is a Dotaku, Japanese bell smelted from relatively thin bronze and richly decorated, the paper model designed by Mochizuki Printing Co., Ltd. Dotaku were used for about 400 years, between the second century B.C. and the second century C.E., and were nearly only used as decorations for rituals.
They were richly decorated with patterns representing nature and animals, among which the dragonfly, praying mantis and spider are featured. Historians believe that dotaku were used to pray for good harvests, as the animals featured are natural enemies of insect pests that attack paddy fields. There is a dotaku museum devoted to the bells in Yasu city in Southern Japan.