Kaneshiro Sakuganki Saizo KK Co. (Nagoya Star K) was a sub-contractor under the authority of the Nagoya Arsenal.
This particular bayonet is of the 48th series.
The 'K' is slanted within the arsenal mark, straight crossguard, blued, fullered blade, contoured bird's head pommel, used screws and washers to secure the contoured grips.
Of note is the Nagoya inspection stamp above the series and SN, and there is also a Nagoya inspection stamp on the mouth of the scabbard and the scabbard ring.