1918 6pr case ~

[Gspragge]

The eternal question ~
Army or Navy ? If this can be answered at all. This is marked CF so are known Tank use casings also marked this way
as those are half charge ? Army Engineers also had 6pr armed yachts in sevice, those would use full charge.
I've always wondered if a Tank casing can be identified by headstamp if the darkening has been lost on th case body.
I'm betting it's Navel of course -

 

[tigbrand]

The eternal question ~
Army or Navy ? If this can be answered at all. This is marked CF so are known Tank use casings also marked this way
as those are half charge ? Army Engineers also had 6pr armed yachts in sevice, those would use full charge.
I've always wondered if a Tank casing can be identified by headstamp if the darkening has been lost on th case body.
I'm betting it's Navel of course -

Gordon, Naval cases are marked so with an N.

 

[ron3350]

I believe the Mk 111 case shown is for land use only and if blackened then for tanks.
I have only seen the N on Mk V cases from 1932 till 1934.
Does anyone have a Mk 111 case marked with an N that they can photograph?

 

[Rrickoshae]

Like this?

 

[ron3350]

Like this?

Nice case loaded 3 times ? last in 1914 or later (see primer date) so you have proved N on early cases for Navy. Thanks.
I would like to see other cases as the N may have been stamped later in 1914.

 

[tigbrand]

Just to add, nearly all the land service mk lll cases I've seen were made by Kynock, with some very high lot numbers. Ive always assumed they were for tanks, but don't think I've seen a blackened case in my time collecting. I would be interested to know what other use this weapon would have been put to at such a late date for land use, unless for short range coastal defence as this was the realm of Royal Artillery if my memory is correct. Daves case is mk lll * due to the conversation to a screw in primer.

 

[ron3350]

The tank rounds were 1/2 black case and base as ID for the weaker gun construction. (I forget the exact construction and reason for the black).
Here are my old photos I think I posted in 2018.

 

[Gspragge]

The tank rounds were 1/2 black case and base as ID for the weaker gun construction. (I forget the exact construction and reason for the black).
Here are my old photos I think I posted in 2018.

The reason for the black was to indicate a reduced charge as the shorter tank barrels did not need a full charge which produced a huge flash.
The Royal Engineers operated armed Yachts with 6pr guns, these would use a full charge being the Navel gun. Where else the Army used 6pr guns
I don't know. These images/photgraphs came with two 6pr cases, I don't remember the details now. Of course if someone polished a case at some
time there goes the darkening ~

 

[Gspragge]

I have this case and wonder who made it ?
Odd mark in a circle and no "6pr" mark - ?

 

[Snufkin]

I have this case and wonder who made it ?
Odd mark in a circle and no "6pr" mark - ?

The case was made by Birmingham Metal and Munitions Co.

1 in a circle describes a detail of the primer (thin cap), see 6 pounder date confirmation; it is barred out because the case has been modified to take a threaded primer.

 

[ron3350]

Another nice Navy case loaded 3 times. Ended up as Mk111* some time after 1899.
The 1 in a circle means the thinner mk11 small primer was used for one load and the 1 has been cancelled out when converted to a screw-in primer.
The A in a circle means a low temperature anneal.
I have Birmingham Metal & Munitions Co. as case maker B.
I see it was also answered above.