This was the largest of the Collath cartridges produced. All Collath cartridges were produced by RWS. The calibre was only sold by Collath as a proprietary cartridge and no other headstamps are known and was designed between 1895 and 1900 and produced until 1928.

Headstamp W.COLLATH FRANKFURT A/O produced by RWS as a proprietary headstamp for G. Teshner & Co and is the large primer earlier variation of the cartridge. Unfortunately this specimen does not have a very good headstamp