Dutch (KNIL) East Indies Military reloads. Given where they came from, Primers are probably dead by now. Primer is .199" (5mm) Roth Patent (Flash Hole thru anvil).

The Flash hole is much smaller than a normal Boxer Flash hole, but can be used as a guide to converting these cases to Boxer Primers. Simply enlarge Pocket with a #4 drill (.209)
This will eliminate most of the anvil as well. Open up Flash hole with 1/16th" drill, to clear a normal large Boxer decapping Pin.
It may be necessary to "Clean up" the pocket with a Primer Pocket reamer.

Anneal these cases...they are "OLD"...and you can then reload them several times.

I have done several 100s of these shells, first reloading with RWS#5005 (.199") Berdan primers, then as these have been getting scarce (Down-under) I have turned to "converting " to Boxer. For this work it is essential to have a mini-Lathe.

Doc AV