strange drill limpet mine

[kiwieod]

got this wooden drill limpet mine at our local gunshow.made from wood with a metal plate in the middle,dosnt have magnets
160mm in diameter
anyone got any idea which limpet mine this is?

 

[MINENAZ16]

Hello,
Maybe this one :

 

[kiwieod]

yes looks like I have the wooden center piece from this mine,this would appear to be a US navy mine with the MK designation

 

[kiwieod]

looks like it is part of the drill version of the ww2 british MK111 limpet mine,minenaz16 has provided the photos from lexpev

 

[MINENAZ16]

I had these two pictures in my computer and forgot the source.
It maybe be more logical that is the drill version of Mk IV rather than MkIII
Regards

 

[kiwieod]

yes it could be that one,i only have reference for the mk111

 

[MINENAZ16]

What mean US 115 ? Is it for USA ?
Other markings on this one (638/115) : https://www.bocn.co.uk/threads/wwii-limpet-mk-iii-versus-limpet-mk-4.105172/#post-325051