Does anyone know whether Russian 57 mm AA rounds have been produced with steel cases that were originally painted silver in colour? A round turned up in a Lincolnshire scrapyard this week. It put me in mind of some tank ammo I saw in the Gulf in 1991 - photos of those are on BOCN somewhere. The fuze looked relatively larger than those I saw in 1991 (fuzes for Russian tank ammo were relatively small as I remember) and I wonder if some of the S60 cases were made of steel. I have one from the Gulf war that is made of brass. The one found this week appeared to have a silver colour fuze, distorted at the forward end and may have been a blind. Needless to say it was blown up. I have no picture of it.