anyone here having more informations about the .575 Miller & Greiss

find a pic here

http://www.patronensammler.de/patrone-des-monats.html

new made collector cartridge by OPM in south africa

"IAA Journal #461, page 59 shows two headstamps- " O.P.M. 9,5 X 62 " & " O.P.M. 9,3-03 BG ", OPM = Otto Planyavsky Munitions
IAA Journal #471, page 47, replica rounds by OPM (Otto Planyavsky Munitions, South Africa)

On line translation of info at http://www.municion.org/458lott/458lott.htm :

"Otto Planyavsky was born in Austria in 1949. He moved to South Africa and started to practice as a professional Hunter in 1992. In 1996 he started to manufacture ammunition in the town of Midrand, and in 1998 moved to Bapsfontein. He specialises in obsolete ammunition, strange, and pods sizes with custom markings. OPM Ammunition, P.O.Box 112; Bapsfontein; 1510 South Africa."
http://iaaforum.org/forum3/viewtopic.php?f=8&t=17207

here another repro, it seems late turned by using 50BMG brass: http://www.municion.org/57/575Miller-Greiss.htm