It shall be unlawful for any person who has not been issued a license under this chapter to sell or keep for sale any alcoholic liquor; provided however, that nothing herein contained shall be deemed to apply to those engaged in the sale of liquor:
A. At the various state liquor stores;
B. In any dining or buffet car operated by any railroad in connection with regularly operated train service, when the person serving such liquor is in the employ of such railroad and is acting within the scope of his employment in so doing, provided a license has been issued to said railroad under the act by the Montana liquor control board and the same or a duplicate thereof is displayed in such car. (Ord. 50, 4-23-1937)