curiously, i just order a pair of enep/hmong knives from aranyik, thailand within the last hour
a 12.5 in. bladed enep one with a wood scabbard with braided rattan bands, 20 in. overall, the blade is 6 mm thick at the grip, distal taper down to 3.5 mm.
a 10.25 in. hmong/enep , in. 16 in. overall, 6mm blade tapering to 3mm. with a folded bamboo basket scabbard.
both 5160 steel with partial tangs. edges are convex ground & advertised as razor sharp. i have a pair of daab swords from the area that were differentially hardened in oil and have a distinct 'hamon', maybe these two will be as well.
look very much like yours above. your crack looks a bit big for filling with std superglue, maybe a high viscosity (gel) superglue, or a slow cure epoxy mixed with a bit of similar coloured sawdust may be better. if you turn it into a heavy user, it might be worth drilling a hole thru the bolster & inserting a steel pin thru it and the tang stub, which is likely quite short.