ARISAKA BAYONET HILT VARIATION

There are four distinct grip variations

C   Contoured Grips

bottom, early toyoda automatic loom variation “A” japanese oak
profile, early Hikari Seiki variation “A”  (walnut -unusual)
bottom, late toyoda model 100 
profile, late toyoda model 100

CWA   Contoured Wraparound Grips

bottom, early matsushita national variation “C”  (?butternut aka white walnut?)
profile, early matsu national variation “C”
bottom, late toyoda automatic loom variation “J”
profile, late toyoda auto loom variation “J”  unknown wood
SWA  Straight Wraparound  Grips
bottom, late toyoda automatic loom variation “K”
profile, late toyoda automatic loom variation “K”
S     Straight Grips
bottom, late hikari seiki variation “P”  note curved bottom edge
profile,  late hikari seiki variation “P”
bottom, early naval variation “O”, very rough, tapered grip
Profile, early naval variation “O”,
slab grips on Hoten pole top, Jinsen pole bottom
Others
Training bayonet, grips have screws from alternate sides, Identified by Juken 30 as issued to the Tokyo University, the two grip marks and the alternate grip screws giving the identification
only a single screw from each side unique to this variation