Unusually large shells

[Cheshiregirl]

Good morning and thank you for letting me join.
I recently inherited these two shells from an anti aircraft unit in Cheshire situated to protect Liverpool docks (incidentally where Ted Heath was based early in his career) and wondered if anyone had any additional information about them? Roughly 26” long x 5” diameter.

“Batch Byo8413” painted to side. “37 Gun lot 32 of 1939 ECC CF” Engraved on bases.

Hopefully I am not breaking any rules by posting an image.
Tea cup for scale.

 

[LEAFLET]

Hi Cheshiregirl,

You got 2 British 3.7 inch cartridge cases.

LEAFLET

 

[Snufkin]

I recently inherited these two shells from an anti aircraft unit in Cheshire situated to protect Liverpool docks (incidentally where Ted Heath was based early in his career) and wondered if anyone had any additional information about them? Roughly 26” long x 5” diameter.

“Batch Byo8413” painted to side. “37 Gun lot 32 of 1939 ECC CF” Engraved on bases.

A helpful previous thread shows a similar cartridge case with fuzed shell for the British 3.7-inch anti aircraft gun:

https://www.bocn.co.uk/threads/british-cartridge.94288/#post-272542

The stampings on the heads of your cases show they were also made by Edward Curran Co., Cardiff in 1939.

A description of the gun is here:

https://en.wikipedia.org/wiki/QF_3.7-inch_AA_gun