I have three examples, Gibbs trade rifle, an un-named trade rifle and a an original Jeffey Sporter. All three only have the words 'Nitro Proved" in various places, as well as the normal English proof marks and of course the serial number. There are no caliber markings on any of my rifles nor are there any bullet wight or cordite charge markings. Both my Mannlicher Schoenauers do but not my Mannlicher rifles.

Matt.