Original U.S. WWI Navy Inert 3-Inch 50-Caliber Round & Casing - Dated 1917 Vietnam The cap is lined with

The cap is lined with deep golden-yellow silk and shows a full-celluloid diamond bearing the silver-blocked Erel trademark (faded)

All was clear

which looks to be made from resin impregnated fabric

The Motor Vehicle First Aid Kit (24 Unit) was very similar to the 12 unit kit

The tube measures 29 3/4" overall

Original U.S. WWI Navy Inert 3-Inch 50-Caliber Round & Casing - Dated 1917 Vietnam The cap is lined withOriginal Item. Only One Available. The 3 inch 50 caliber gun (spoken "three inch fifty caliber") in United States naval gun terminology indicates the gun fired a projectile 3 inches (76 mm) in diameter, and the barrel was 50 calibers long (barrel length is 3 in 50 = 150 in or 3. 8 m). Different guns (identified by Mark numbers) of this caliber were used by the U. S. Navy and U. S. Coast Guard from 1900 through to 1990 on a variety of combatant and