Report Wilhelmina with helmet in Exonumia (Tokens, Medals, etc) Forums Posted August 28, 2006 Trench art was of course by no means limited to `coins'. For example, I have a cigarette lighter made from a .303 calibre bullet. The .303 was standard calibre for British rifles during WWII. I came across this comment while reading about trench art: "Decorated shell casings... sometimes come with projectiles. Occasionally these may contain live explosives that can kill or cause serious injury." Yikes. The Bud Vase of Destruction.