One of my favourite pieces in my collection. It's an original 1.5" L1A1 wooden Baton Round, designed for use in Hong Kong around 1965. Beside it is an experimental 1.5" Irritant case filled in November 1965 by SPRA. The irritant case had an 'unstepped' case and was adapted by lathe turning the L1A1 to a smaller outer diameter with step, and the wooden baton projectile has a black rubber obturation 'O' ring with a shellac seal above the ring. Cases manufactured at Radway Green in 1964.