Thank you all for the posts it is really appreciated
I have been doing a bit of digging and the very early 15pdr Ehrhardt type guns were supplied to Britain with Ehrhardt shells from the manufacturers ( ref British Artillery Weapons and ammunition 1914 - 1918 page 219), so Minenaz 16 correct identification of proj so this is either a 2.95" case and 15pdr Ehrhadrt proj paired together or they may have experimented with the 2.95" with a Ehrhardt proj. measurement wise as mentioned in previous posts a 75mm fits in the same case.
Cheers
womble
I have been doing a bit of digging and the very early 15pdr Ehrhardt type guns were supplied to Britain with Ehrhardt shells from the manufacturers ( ref British Artillery Weapons and ammunition 1914 - 1918 page 219), so Minenaz 16 correct identification of proj so this is either a 2.95" case and 15pdr Ehrhadrt proj paired together or they may have experimented with the 2.95" with a Ehrhardt proj. measurement wise as mentioned in previous posts a 75mm fits in the same case.
Cheers
womble