markings on flare gun shell cases, markings ' S3 ' on St. E…

WW1 US Signal Flare Gun - De-activated and Antique Guns, Munitions

How to Identify Shell Cartridges From WWI, Gone Outdoors

Flares - Arms and other weapons - The Great War (1914-1918) Forum

Need help identifying this 3 shell, please (Added information on

Casing identification - Arms and other weapons - The Great War

WW1 US Signal Flare Gun - De-activated and Antique Guns, Munitions

identification - Can anyone help identifying markings on this

Shell Casing Identification

Pilot S3 Drafting Pencil - 0.4 mm