Strange MILLS grenade

[klarkon]

Hello

I found a strange grenade Mills, the dimensions of the filling screw and the hole for the base plug are different from my No.36M Mk1.

What's the type is it ?
Manufacturer?
What kind of base plug belongs to this grenade ?

[hayleyp]

q

1st ww ?

[lnijherald]

Have you checked out this website?
http://millsgrenades.co.uk/?LMCL=R48y9f


Luc

[klarkon]

Yes I checked it long ago............I checked all the items.
I even sent an e-mail and there was no response.