I saw this on a rather expensive site, though this isn't - "Heavy Ordnance"
**NEW ADDITION** 19841 UNIDENTIFIED WW1 ERA SHRAPNEL SHELL- POSSIBLY U.S. 75mm? - Body seems to be 75mm, or a hair under 3 inches diameter and overall about 7.5” remaining. It is unusual in having a hexagonal interior, and you can see the remains of a pusher plate in the base. The front is threaded on the outside, probably for some sort of adapter to provide an ogive shape and install a fuze. Fired, rusty range scrap. INERT- no flammable or explosive components. $35.00
Interesting what ever it is ?
**NEW ADDITION** 19841 UNIDENTIFIED WW1 ERA SHRAPNEL SHELL- POSSIBLY U.S. 75mm? - Body seems to be 75mm, or a hair under 3 inches diameter and overall about 7.5” remaining. It is unusual in having a hexagonal interior, and you can see the remains of a pusher plate in the base. The front is threaded on the outside, probably for some sort of adapter to provide an ogive shape and install a fuze. Fired, rusty range scrap. INERT- no flammable or explosive components. $35.00
Interesting what ever it is ?