White Eagle Brand Air Gun Pellets, 4.5mm Caliber, 300 Rounds, Antique

Found during a clean-out of my parents' home, these are parts for an air rifle my father used to use for recreation.
As these are remaining from his usage, I counted them and found 310, so I am listing them as a set of 300.
As these are old items, there may be dirt or deformation, so please only purchase if you understand this.

Specifications: Ammunition certified by the Japan Rifle Shooting Association.

I have no knowledge of these items or how to use them, so I ask that those with expertise please purchase them.
I believe these are rare items nowadays, so I appreciate your consideration.