I found this case today and thought it was a 3Pr Hotchkiss case but wondered why it was a Mk11 and not much later for a Hotchkiss.
It is a 47x350R 3 Pr 2 Cwt light tank round with case altered from Mk1 to II and an Australian primer. Primer was tight and original to the case.
I thought the 3Pr Hotchkiss was the case used in tanks so I am still learning. My best find for this year so far.

It is a 47x350R 3 Pr 2 Cwt light tank round with case altered from Mk1 to II and an Australian primer. Primer was tight and original to the case.
I thought the 3Pr Hotchkiss was the case used in tanks so I am still learning. My best find for this year so far.
