Help 20mm projectile

Hello, would anyone know what caliber this projectile silver projectile and copper forcing band belongs to?
Thank you


1º 20x139 - 2º 20x128 - 20x110 HS - 3º. ?

1 Like

It should be a Swiss 20x110 TP.

1 Like

Thanks EOD, date, do you have any information, documentation or image?
20x110 HS?