Acquired this Jian recently - 38*cm. Long double edged sharp flattened diamond blade x 2.5 cm. wise at guard. 12 cm. grip, 4 x 3 cm. x 2*mm. Oval disk guard with 4*mm. Hole centred over the spine one side.bolster & pommel steel pipe, centre section wood swelling from the pipe sections. Pommel end has a second steel section inside the pipe over the wood, terminal end of the tang is bent over the central wood core. Blade appears to be laminated, or possibly inserted hard edge.
It has been suggested it is So. East Asian or so. Chinese.
"Antique Vietnamese / Chinese sword/knife or DADAO China Boxer Revolution
"It is a Vietnamese dao Dadao truong of the 19th century. "
I am reasonably sure it is NOT a dadao truong. - I have one of those...
Any ideas on where it came from and/or any other data?
Thanks in advance for any info.