20 x 110mm HS United States
Details
| Type | HEI |
|---|---|
| Projectile | steel, aluminum fuze, yellow, blue tip, 1 copper driving band Projectile Markings: (stamped) NMC LOT 15168-1 1942 (ordnance proof mark) |
| Case | [none] |
| Primer | |
| Headstamp | [none] |
| Notes | This is a non-standard color code and the identification of HEI is not certain. NMC is National Munitions Company, USA. |