Carbide was used through the 1930's in various types of bicycle head lights. These are original (empty) sales tins that the carbide would have come in. They are in overall good condition with light wear and rust on the inside. One has stronger graphics than the other but overall they are in very similar condition. No choice. The price is for one. They measure about 3 1/4" tall and a little under 2 1/2" in diameter. Extremely rare bicycle accessory in this condition.