Rare Victorian Cosh/Swordstick S/n 0966

I have encountered dozen's of coshes and swordsticks but I have never seen this combination before As a cosh it is 20' long with a Hexagonal bolt? and what looks like Ray skin and also a leather wrist strap On the side of the cosh is a hook and eye and when released there is an 8.5' blade which is then a 13.5' knife and when closed it looks like a ridding crop S/n 0966 Something a bit unusual for the collector Price includes UK delivery