THIS LISTING IS FOR A 1940'S RARE 2 OZ. FULL NEVER OPENED BOX OF ARM & HAMMER CHURCH & CO'S BAKING SODA. THIS ITEM IS IN GREAT CONDITION ESPECIALLY CONSIDERING IT IS AT LEAST 75 YEARS OLD AND HAS NEVER BEEN OPENED (SEE PICTURES). IT IS 2 1/4" X 1 5/8".  THERE IS SOME WRITING ON THE BOX WHICH WERE THE NAMES OF MY GREAT AUNTS.  DON"T KNOW WHY MY GREAT GRANDPA WOULD HAVE WRITTEN ON THIS BOX.  I FEEL THAT IT ADDS TO THE ORIGINALITY OF THE ERA!