20 mm

[doctor]

Hi
Any info for this 20 mm shell or 2 cm
L 70.2mm without cap
L 82 with ebonite cap
8 grooves on copper driving band
There 're two crimping grooves on top an three under for holding cap
microscopic red paint on flat cap
unknow 2cm Becker shell or 2 cm WW2 shell?
Difficult to say if there is an screwing plug on base shell
No visual radioscopic internal part

 

[Rrickoshae]

looks like an AP Mk2 20mm Hispano with the bakelite cap to me. Dave