20 x 128mm Oerlikon United Kingdom
Details
| Type | Dummy |
|---|---|
| Projectile | steel, aluminum windscreen, brown, 1 iron driving band Projectile Markings: (stamped) 115 13 1 |
| Case | steel, segmented crimp, green lacquered, 2 holes |
| Primer | hex bolt |
| Headstamp | 14 Oe 73 BM |