Mystery experimental projectile

[Dez Broton]

Hello all,

I have this mystery piece that appears to be an experimental projectile based on its colour. Aside from that ive no idea what it may be for or its value.

The markings to the best of my abilities on it read;
8/AMM 1579
P8/(T?) 5817 /E/M/D/8
RLB 1/6
SERIAL NO 79
C68

Any assistance or knowledge identifying it would be much appreciated.

Regards, Dez

 

[pzgr40]

Diameter? Length? Internal thread?
If thin walled my guessis a HESH shell