WW1 German 77mm Shell Case

[Flying10uk]

Here is a recent acquisition, what is believed to be (according to the net) a 77mm X 227mm WW1 German shell case.

What I didn't know until looking this item up is that, apparently, the Germans didn't identify the size of the shell on the head stamp during WW1. Apparently the markings that are present, such as, date and inspectors markings, don't include the size.

77mm at open end

227mm length