Here is a second one compared with a 577/450 and paper 577 Snider
Here is another picture with the two cartridges.
As you can see the cartridge is a coil cartridge covered with linen or paper.
The paper portion is considerably shorter than a Snider paper cartridge. The coil portion is as along as 577/450.
This a paper covered coil cartridge.
Does anyone have any information on this cartridge or any paper covered coil cartridge?
FYI, these cartridges are on display in a small museum near Isandlwana