I am a big fan of white bags. My 6 digit Inland is a white bag. It has a 1950s charcoal grey (almost black) manganese phosphate finish, Underwood barrel dated 44 (no month) and an ME of "0". It is a mixmaster of course. The guy I got it from actually took it from the bag. When he got it, it had the original "I" cut high wood Inland stock, and he kept it when he sold it to me, and had it in a later stock. He had bought it just for the I cut, and gave me a great buy on it.
With that said, this is how DOD wanted it in the 1950s. It was an "Issue weapon" then, in that condition.