All old lead bullets will eventually form that white crud. If it bothers you just wipe it off with a cloth covered in bullet lube.
Cases were made by the factory and many distributors also had them made up for customers. Unless it is maker marked somewhere you will probably never know where it was made or by whom.
Unfortunately, many of the minute details that we collectors of today obsess over were just not important back then and therefore the information was not recorded for posterity.
Still a very neat item and deserving of a good home.
