I am trying to ID the projectile on the right in the picture below. The one on the left is a 57mm Belgian with the typical driving band, whilst the one on the right is obviously different. It is 190 mm tall and the base is marked with a '19' and a 'No' with two dash lines under the 'o'.
At first I thought that a socket had been inserted in the thread but on closer inspection it appears to be originally made without thread. I have seen other projectile calibers with a smooth pocket, so is this for practice? All information welcomed.




At first I thought that a socket had been inserted in the thread but on closer inspection it appears to be originally made without thread. I have seen other projectile calibers with a smooth pocket, so is this for practice? All information welcomed.



