Jigoku's swords are numbered 1-9, but you don't get to see all of them, in order of use they are...
sword no 7 - 17 kills (long samurai sword)
sword no.6 - 12 kills (2 daggers in single scabbard)
sword no.5 - 12 kills (long handle short sword that fires blade)
sword no.4 - 22 kills (sword with scabbard that attaches to handle)
sword no.3 - 1 kill (long very flexible sword)
sword no.1 - 52 kills (very long samurai sword)
sword number 9 - 1 kill (Large curved, wide bladed scimitar)
another sword of his is seen, a large samurai sword with a spinning top on the hilt.
Jigoku kills 146 people throughout the movie.
The no.1 sword is the sword with the spinning top on the hilt which is on the ground next to the noduchi (extra long katana) that Jigoku grabs just before being confronted by the enemy on the bridge.