Mark & K Series (pre 1960) KE4, MARK 7 KE7, KF7, KG7, KG4 KF3, KF5, MARK5 KF9, KG9, MARK 40 KH7, MARK 15, MARK 20 MARK 10, 10A, 15A, 28, 28A MARK 20H MARK 25 MARK 30 MARK 30H, MARK 55H MARK 35A MARK 50 MARK 55 MARK 58, MARK 55A, MARK 58A MARK 6, MARK 6A MARK 75 MARK 78, MARK 75A, MARK 78A