Bourbon fuse Percussion Fuse; Percussion tube for round shells; consisting of three parts: the outer body with screw-thread for screwing into the grenade and with brass protective cap; the inner tube with chimney for the percussion cap; a locking ring around the inner tube. The brass protective cap was used to prevent premature blows or falls. The tube was screwed into round shells. To ensure that they would hit the target with the tube; they were fitted with a stabilizing bar on the other side; Japan; Shimonoseki; Street of; anonymous; 1845; iron (metal); brass (alloy); h 7 cm x d 6 cm