
This shell is a normal H.E. type, internally threaded at the nose to receive the fuze, and threaded externally at the base to screw into the shell ring of the rocket motor. The Shell Mk I, having 12 external threads per inch, will fit only the Mk I Motor. The Shell Mk II is machined with 14 threads per inch, and will fit all other motors. The shell is painted buff overall, with a 1/2 inch red band around the nose portion of the shell, and a 1/2 inch green band around the body. The initials of the filling are stenciled in black on the green band.
No information about functioning.
Shell, 2 inch Smoke Trace, Mk 1
OP 1665, British Explosive Ordnance (1946)