Mason & Mckee #145 Billinghurst Requa Battery GunFor your consideration one Mason & McKee #145 Billinghurst Requa Battery gun. You will find this bullet to be in excellent dug condition. The patina is a nice white with about 60% of this bullet covered with a deep woods dirt. All 4 rings are crisp & notice the sharp nose point. The solid base is smooth with a small casting voidseems to be a common trait to this bullet. Measures about 0. 535 x 0. 87 inches.