All of the Savage made No4 MkI's and MkI*'s were stamped "U.S. PROPERTY". I have a '41 and '42 MkI and a '42, '43 dated, '43 not dated, and '44 MkI* and they are all marked "U.S. PROPERTY". The rumor is that an officer of the Britishicon army did not like the property mark and ordered it scrubbed off. As far as how many, I'm not sure if anyone will be able to answer that.