World War II era Japanese Type 100 20 mm AA Round

This is an inert World War II era Japanese Type 100 20 mm AA round. This aa round is in excellent condition with little to no signs of wear and patina present on the shell or inert HE (high-explosive) head. Additionally, a pair of holes have been drilled into the shell itself with one being near the neck of the round and the other slightly above the primer. There is some writing in Japanese visible on the base of the shell as well.