I have about 4 or 5 of those Stanley push drills. Several of mine are also marked BELL SYSTEM-B. I have seen quite a few of the phone company ones over the years. It's nice when you find good bits still in them. Some I have found the chrome plating is worn off down to the brass plating. All of mine attract a magnet, so they are steel under the brass plating. They are well made unlike some of the other knockoff brands I have.
EvilDr235