
Very's cartridges are used primarily as distress signals.
The Very's cartridge is similar in appearance to a 10-gauge shotgun shell. The star charge is a tightly packed cylinder of pyrotechnic material reinforced with wire and wrapped with quickmatch. The propelling charge is composed of about 25 grains of black powder separated from the star charge by a hard felt pad.
Nothing else to see.
USNBD - Bombs and Fuzes, Pyrotechnics (1945)