Apparently Rheinmetall retained the established "D&C" name as a trademark for their ammo busines. A translation of the ad:
Dreyse & Collenbush, Soemmerda in Thuringia
established 1817
department:
primers and ammunition
war- and hunting ammunition
revolver-,Flobert- and Sharps-cartridges,(indoor-)target ammo,
blasting caps, primers for artillery ammo,
bang signals for railways, all kinds of primers.
export to all countries
Making of all sorts of related articles according to examples or drawings.
(Larger rimfire cartridges like .32 or .38 short, long or extra long were then called "Sharps cartridges" in Germany for reasons still unknown to me)
