What a great thread if I may say so myself
....here's an update to my original pic, and includes my paltry collection of US 57mm rounds (i.e both of them!!)
Left to Right
6 PR Drill - 1942
6 PR Proof - 1942 (Case) 1942 (Projectile)
6 PR APDS - 1943 (Case) 1944 (Projectile)
6 PR APDS - 1942 (Case) 1944 (Projectile)
6 PR AP - 1942 (Case) 1942 (Projectile) - Does the driving band mean this is Canadian/US?
6 PR APC - 1943 (Case) 1943 (Projectile)
6 PR HE - 1943 (Case) 1943 (Projectile)
6 PR APCBC - 1943 (Case) 1943 (Projectile)
6 PR APCBC - 1943 (Case) 1943 (Projectile)
57mm APHE M86 1943 (Case) 1943 (Projectile)
57mm AP M70 1942 (Case) 1942 (Projectile)
Hope you like....and keep the pictures coming
Rich