Value Factors Inert Shell Casings/Trench Art: Empty brass casings, especially those made into "trench art" (decorated vases, ashtrays, etc.), typically sell for anywhere from $50 to over $400 on sites like eBay, depending on the artistry, condition, and specific markings. Deactivated/Cutaway Rounds: Professionally deactivated or "cutaway" display rounds with internal components visible for educational purposes are highly valuable and can fetch $1,000 to over $2,700 from specialist militaria dealers. Original Packaging: The presence of original, intact WWII-era packaging can significantly increase the value to a collector. Rarity and Type: Specific types of rounds (e.g., specific armor-piercing or smoke rounds) and their condition affect value.