large piece shrapnel help needed....German Naval???

[butterfly]

I wanted to share this piece with you all and ask for some help in identifiacation if possible.

The seller said that this piece was recovered from the ground during excavation work on a house in Great Yarmouth, though obviously I have no real hard based proof of this. What is apparant is that it is a huge piece of shrapnel and the reason for my post is to see if anyone can help me to identify the size of projectile this came from and indeed if it can be determined that it is indeed of German origin.

So I do know that Great Yarmouth came under naval bombardment during 1914, 1916 and 1918, though in my limited trawl through online resources it would seem that poor visibility hampered the shelling and so damage was limited as many shells fell on the beach.
So taking what I have been told about the location of recovery, and the ships used during the bombardment, starting at the top could this be from either a 280mm (11") or a 305mm (12") gun?

........and also as a starting point does anyone have any diagrams of the ammunition used for these main armament guns? (I presume that the shrapnel comes from an HE shell?

Any help at all on this one would be most welcome!!!

Ok, here are some photos....

first of all some overall pics...

HPIM9856.jpgHPIM9857.jpg

comparison to a WW2 88mm projectile (which I ought to point out is INERT and F.F.E.). I have also tried to show the profile of the shrapnel ...

HPIM9849.jpgHPIM9850.jpgHPIM9851.jpgHPIM9852.jpg

The end tapers down in thickness and there appears to be remnants of a thread on the inner wall where presumably the fuze would have screwed in??

HPIM9853.jpgHPIM9854.jpg



....and finally some close up shots showing the thickness of the piece and also the edges where it tore apart....

HPIM9855.jpgHPIM9858.jpgHPIM9859.jpgHPIM9860.jpg

regards Kev

[butterfly]

Approaching this one from another angle, does anyone have any details on the relative thickness used in projectiles of differing sizes, presuming that this piece is from an HE shell??

Or indeed does anyone have any opinions at all on it? after all its only hearsay that this was found in the location mentioned, and as much as I believe the person whom I got it from I have been collecting long enough to know that sometimes stories do get added to enhance the price of an item (though not in this case as it didnt cost the earth!!)

Rather than proving that it is from a German Naval Shell, is there anything about it that would suggest it wasnt????

Kev