Dear Pivi,
I don’t know the title of that book. I only have two pages copied from another forum on the web.

The primer is berdan.
Of course the brass possibly was made from another brass. Very few number of brass may be suitable for that operation in this cartridge. It may be 45 Basic.
I am sure that the cartridges have been loaded in non fired brass. Brass have been made at cartridge factory (with appropriate equipment) but not by amateur reloader with handtools.

I suppose it may be “Sellier & Bellot” (former Chechoslovakia). I know that “S&B” never produce 10.75x65R as a regular product. But they produced 10.75x68 Mauser in 1950-60-ties (with berdan primer). Possibly they made 10.75x65R as small (subformal) series, so without headstamps.

This is the image (not my - from the web) of 10.75x65R Grundig (Collath) with Utendorffer-Nurenberg headstamp anf FMJ bullet. The bullet not seems very light comparative versus 19.0 gramm bullets in my cartridges.