Original U.S. Cold War Navy 3 Inch .50 Cal Mark 29 Armor-Piercing Capped Round - Inert Headgear but is seen on replaced

but is seen on replaced barrels from the 1960s and 1970s

There is wear as well as pin holes

reading JSA / 1901

The right side of the barrel is marked with an Oberndorf antler proof

There are no signs of dry rot and the pea green color is nice and rich

Original U.S. Cold War Navy 3 Inch .50 Cal Mark 29 Armor-Piercing Capped Round - Inert Headgear but is seen on replacedOriginal 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 (76mm) 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 1890 through the 1990s on a variety of combatant and