Brass shell case (H 30.5cm x diameter 9cm) bearing stamped maker's marks: 'Berndorf 1913 660Fried.Krupp A.G. 12'; the base from another shell casing has been fashioned into a lid.
Cartridge (firearms) - Wikipedia
American Civil War Relics Catalog
Trench Art - Militaria & Weapons - Antiques Reporter
2x Pack of 6 TOY Shell Cartridges Gonher Hunter or Upland Shotgun Cap –
Transparent Replacement Cartridge Shell With Screw Cover For Nintendo 64/N64 Game Card Housing From Gamingarea, $3.89
Trench Art - Militaria & Weapons - Antiques Reporter
Empty Refillable Shell
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Console Top Lid For NES 72 Pin Flip Top Door Cover Part Card Cartridge Slot Case Console Card Door Shell Case US version - AliExpress
30 PCS Plastic Cartridge Shells with Built-in Spring,for Tehoosen's Fully Automatic Rebound,Toy Gun with Jump Ejecting Mag : Toys & Games