165mm AVRE help needed please

[SG500]

Thanks Harry that's perfect much appreciated.
Dave.

 

[HarryG]

No Problem

 

[SG500]

Hi Dave
Is this the one you are after, there is also a Mk2, L1A2 & Practice, Paint schemes being different.
Harry

Does anyone know when the Mk1 was replaced with the Mk 2?

Dave.

 

[HarryG]

Hi Dave
I don't know exactly but my drill is stamped for 7 / 54 .
Harry

 

[SG500]

I'm in the middle of a l long term restoration of a 165mm AVRE.

Regarding the screw on case. There's a 35mm diameter....thing....that sits around where the primer protrudes into the case with the following markings on it. does anyone know what its for please?
TESTEDNo 414
BRITISH PRE-FOCUS

Thanks

 

[tankbarrell]

That looks like the rim from a pre focus headlight bulb. They fit into the back of a headlight unit and the flange locates the bulb in the correct position for focussing the beam, hence pre focus. The circular notch locates against an indent in the lamp socket. Could it have been used as a firing circuit tester?

 

[tankbarrell]

 

[SG500]

View attachment 199563

Hi thanks WOW, you are thinking outside the box, makes total sense. When I removed the screw on "case" from the rest of the projectile a load of soil and crud fell out including the mystery item, and I had assumed it was something to do with the projectile. The damaged holes in the side are certainly big enough for it to have got into the "case" when it must have been in the ground. Possibly nothing at all to do with the round. Many thanks for the input.

 

[HarryG]

Hi Dave
Here is a photo off the inside of one of my cases, it does look like the ring from a bulb from the shape and the cement to hold the glass.