This is an odd-ball.

[IanB]

I acquired this at a local arms fair thinking it was essentially a dummy tanto for the tea-ceremony or similar occasion but on getting it home and handling it, it clearly is a kind of club / jitte. It is of a moderately heavy wood, fully lacquered and fitted with vey reasonable quality menuki and saya mount. It seems to be representing an ebi, although it is a bit odd and indeterminate in that quarter.  Has anyone seen its like?

Ian Bottomley

[ROKUJURO]

Yes, and it was called a 'Doctor's sword'.

Unfortunately, I have no pictures to show.

[ckaiserca]

There is a thread on bokuto here:

 

[IanB]

Many thanks Jean and Charles, - yes of course a bokuto. Makes sense being carried and used by a doctor as a crack on someone's head would require the professional services of the wearer.

Ian B.