Unidentified baton round "BOLA SHELL"

[Falcon]

I found this at the boot sale this morning. Can anyone tell me where it is from and how old it is?
I know it's not British military as these are called baton rounds in British service.

It has an aluminium case with the following dimensions:

Calibre: 37mm
Length: 212mm (8.35")
Rim dia: 43.7mm (1.72")
Rim thickness: 3.18mm (.125")

There is no headstamp, and the case has a shotgun type primer. The only markings on the shell are "BOLA SHELL" stencilled in matt black paint.

The tube is made from dark brown cardboard and is marked
BATON SHELL
2 PROJECTILES

Some of this text is missing where it appears that a seal was torn off before use.

Thanks for any info.

 

[SpudGun]

The container looks American to me. I have a couple of US grenade containers the same colour and construction.

 

[TimG]

Falcon,

Suspect it might be one of these; http://www.bocn.co.uk/vbforum/threads/3694-British-Assault-grenade (last posts). Bolas comes from the Spanish Bola.

My one is for use from a 2.5" discharger cup.

Regards

TimG