This set is so pretty with its glass cubic style base. The syrup or cream container has a metal cap that screws onto the base. The sugar container has a long hollow metal tube that hangs in the center of the base to dispense the sugar and it extends above the cap 1 ¼ inches. I see no corrosion on either cap. I do see the words Hong Kong on the base of the sugar between the star points. The syrup cap mechanism pulls back easily to dispense the syrup. There are no marks of identification on the syrup bottom. The syrup has no star mark on the bottom rather this is flat. What a wonderful set to dispense the breakfast syrup or cream and sugar at your morning table with a touch of style.