An inert, British 76mm Brass Shell Case in mint condition.
The headstamp is: "76 mm M/64 MK.7" and "RLB-8-"
"RLB" is the manufacturer's abbreviation for Royal Laboratories
Measures approx. 585 x 76 mm.
The base diameter is 111 mm.
This is a British-made case for the US 3-inch L/50 naval gun.
Please see the photos for more details.